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Social mediaprogramming part2-java-jax-london

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Khanderao Kand
Khanderao Kand

The document provides an overview of social media programming and technologies. It discusses key APIs and frameworks for interfacing with popular social media like Facebook, Twitter, Google+, and standards like OAuth, OpenID, REST, and JSON. It also covers technologies for processing large social media data using databases like CouchDB, MongoDB, Cassandra, HBase, and frameworks for building distributed applications on Hadoop. Finally, it requests feedback and offers to share more details on social media and recommendation products and services.

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Social Media Programming Khanderao Kand CTO GloMantra Inc mybantu virtual personalized Assistance @khanderao Nov 2, 2011 at JAX Conference, London
Khanderao Kand CTO of Glomantra and myBantu in Silicon Valley, CA, USA AI based Relevance platform / recommendation technology with Social Intelligence Projects on Big Data, Computing, Machine Learning, Text Analytics, SOA, User Interest profiling, Yield Optimization BIO: 20 years in Industry (currently AI, SOA, Social, Mobile and Cloud Technologies) Lead Oracles SOA and BPM Architecture Chief Consulting Architect for SOA and BPM to 50+ architects & hundreds of developers of Oracles next Generation Fusion Apps Lead Architect of Peopletools Architect in CRM, Online Dialog Marketing, OLAP Hyperion Participated in Standards of BPEL and SCA at OASIS 9 Patents filled Frequent Speaker in conferences Authored articles in JDJ, WSJ, Cloud Computing
Agenda APIs, Frameworks and Tools for Social Computing: Key Technologies, APIs Interfacing with Popular Social media Storage Social Media Data Processing
Foundational Protocols and Standards for Social Media
OAuth OAuth is open standard for Authorizing Access (typically data access / actions) Oauth hands over access token and not user credentials Oauth is essential to developing social-ready applications OAuth protocol (Dance) involves series of 3 party (consumer browser, Service provider Social media Site and App). OAuth, including Twitter, Facebook, LinkedIn, TripIt, and Foursquare, as well as the Google and Yahoo APIs. Different SM supports either Oauth 1.0 and Oauth 2.0 Visit : http://oauth.net APIs: Jersery (JAX-RS), Spring Security API, Googlecode,
Social mediaprogramming part2-java-jax-london
Open ID Open ID is open source standard for multi-site authentication OpenId is for authentication as against Oauth No need of adhoc and site specific authentication Oauth and OpenID can coexist Open ID providers : think of Google login Providers pass ID attributes to the relying party (app) However, Oauth is more popular and common in Social Media interfaces Visit http://www.openid.org Java API: openid4java, GAE supports,
REST Representational State Transfer (Roy Fieldings paper for Architectural Style over HTTP) Basic GET, PUT, POST, DELETE operations on a resource Internet world REST is currently winning Google, Yahoo, Facebook, etc etc. Java: Jersey (JAX-RS), Restlet, RestFul Services, JAX-WS
JSON Javascript Simple Object Notation as lightweight data interchange format Lighter than XML Can be manipulated on browsers No need for parsing into DOM http://www.json.org Java API: GSON, Jackson, JSONLib, FlexJSON XML to/from JSON conversion: JSONLib
RSS Really Simple Syndication (originally RDF Site Summary) Started with news, site, blogs update Simple and lightweight Popular Readers: Google Reader, Feedly etc Java API: ROME, Simple XML parsing
APIs of Popular Social Media
Facebook Graph API Representing objects and relationships in Facebooks social network Simple, consistent and REST style representation Objects: People, events, pages, and photos People: http://graph.facebook.com/659690992/picture Events: http://graph.facebook.com/331218348435/picture Groups: http://graph.facebook.com/69048030774/picture Pages: http://graph.facebook.com/DoloresPark/picture Applications: http://graph.facebook.com/2318966938/picture Photo Albums: http://graph.facebook.com/platform/picture Access API: https://graph.facebook.com/ID/CONNECTION_TYPE
Facebook Graph API: Access https://graph.facebook.com/ID/CONNECTION_TYPE Friends: https://graph.facebook.com/me/friends?access_token=... News feed: https://graph.facebook.com/me/home?access_token=... Profile feed (Wall): https://graph.facebook.com/me/feed?access_token=... Likes: https://graph.facebook.com/me/likes?access_token=... Movies: https://graph.facebook.com/me/movies?access_token=... Music: https://graph.facebook.com/me/music?access_token=... Books: https://graph.facebook.com/me/books?access_token=... Notes: https://graph.facebook.com/me/notes?access_token=... Permissions: https://graph.facebook.com/me/permissions?access_token=... Photo Tags: https://graph.facebook.com/me/photos?access_token=... Photo Albums: https://graph.facebook.com/me/albums?access_token=... Video Tags: https://graph.facebook.com/me/videos?access_token=... Video Uploads: https://graph.facebook.com/me/videos/uploaded?access_token=... Events: https://graph.facebook.com/me/events?access_token=... Groups: https://graph.facebook.com/me/groups?access_token=... Checkins: https://graph.facebook.com/me/checkins?access_token=
Facebook Search using Graph API All public objects https://graph.facebook.com/search?q=QUERY&type=OBJECT_TYPE All public posts: https://graph.facebook.com/search?q=socialcommerce&type=post People: https://graph.facebook.com/search?q=Khanderao&type=user Pages: https://graph.facebook.com/search?q=glomantra&type=page Events: https://graph.facebook.com/search?q=conference&type=event Groups: https://graph.facebook.com/search?q=programming&type=group Places: https://graph.facebook.com/search?q=coffee&type=place&center=37.76,122.42 7&distance=1000 Checkins: https://graph.facebook.com/search?type=checkin
Facebook: Publishing on Wall HTTP Post Access token curl -F 'access_token=...' https://graph.facebook.com/313449204401/likes
Example String url = "https://graph.facebook.com/"+facebook ID+"/feed"; String data = URLEncoder.encode("access_token", "UTF-8") + "=" + URLEncoder.encode(ACCESS TOKEN STRING, "UTF-8"); data += "&" + URLEncoder.encode("message", "UTF-8") + "=" + URLEncoder.encode(wallMessageText, "UTF-8"); data += "&" + URLEncoder.encode("picture", "UTF-8") + "=" + URLEncoder.encode(IMAGE URL, "UTF-8"); data += "&" + URLEncoder.encode("name", "UTF-8") + "=" + URLEncoder.encode(POST TITLE STRING, "UTF-8"); data += "&" + URLEncoder.encode("caption", "UTF-8") + "=" + URLEncoder.encode(CAPTION STRING, "UTF-8"); data += "&" + URLEncoder.encode("description", "UTF-8") + "=" + URLEncoder.encode(DESCRIPTION, "UTF-8"); data += "&" + URLEncoder.encode("actions", "UTF-8") + "=" + URLEncoder.encode("{"name": action_name", "link": http://192.169.0.46/app/valid url1"}", "UTF-8"); data += "&" + URLEncoder.encode("link", "UTF-8") + "=" + URLEncoder.encode(LINK URL, "UTF-8"); // Constructing action links JSONObject obj = new JSONObject(); LinkedHashMap<String, Object> m1 = new LinkedHashMap<String, Object>(); m1.put("text,LINK1 TEXT); m1.put("href", http://192.169.0.46/app/valid action url1); obj.put(LINK1 LABEL, m1);
Twitter Twitter is ranked as one of the ten-most-visited websites worldwide by Alexa's web traffic analysis. March 2010 10 billionth tweet Twitter has a user retention rate of forty percent. Value: Conversational 30%, Pointless Babble 30%, Promotion 8%, News 8%, news 7-8% and spam Good source: news validation, trend, topic updates
Twitter Usage "Twitter Revolutions" and which include the 2011 Egyptian revolution, 20102011 Tunisian protests, 20092010 Iranian election protests, and 2009 Moldova civil unrest Twitter is also increasingly used for making TV more interactive and social Most of the celebrities are on Twitter President Obama and many others effectively used Twitter for campaigning Twitter has become a great source for latest news Twitter is an indicator for buzz around latest topics and trends Brands are using twitters for promotions of products and spreading deals
3rd party Twitter Java APIs Twitter4J : Open Source BSD Java-Twitter Jtwitter : Open Source Twitter Client Streaming API
Twitter Twitter API allows to Tweet Direct message Search Get tweets
Twitter4J API Twitter4J (third party open source) Access token / consumer key in twitter.properties Twitter twitter = new TwitterFactory().getInstance(); Query query = new Query(mybantu"); QueryResult result = twitter.search(query); // uodate status Status status = twitter.updateStatus(latestStatus);
Twitter Fire hose GNIP 50% at approximately 360K per year For analysis but not for resale or display tweets Spritzer 2% random for free
Open Social Project "For the question about Google plans to allow developers to create Google+ apps deploying the OpenSocial APIs, a spokeswoman of Google said that by means of email nowadays the Google+ platform cant support the OpenSocial APIs. She also added that nevertheless, they are utilizing many of the technology which was designed as part of OpenSocial, along with the gadget application packaging model, and power Google+ games and the Portable Contacts JSON schema. Because they define the +Platform APIs, they are drawing close attention to the future tendency of the OpenSocial APIs, as well as converging everything possible."
Developing Social Network Apache Opensource project in incubation Shindig
Open Social Great initiative with huge promise A common open source API for social media launched in 2007 Early movers as open social containers: Google Orkut, hi5, LinkedIn, MySpace, Netlog, Ning, orkut, and Yahoo! Opensource OpenSocial Based container : Apache Shindig Bummer Except Facebook Google+ is not yet committed to Open Social
Google Social Graph API By supporting open Web standards for describing connections between people, web sites can add to the social infrastructure of the web The API returns web addresses of public pages and publicly declared connections between them. Allows developers to create a button for a Web site that would allow a registered user to easily "add friends. index the public Web for Friends of A Friend (FOAF) and Friends Network
Googles Public Social Graph The Social Graph API looks for two types of publicly declared connections: 1. It looks for all public URLs that belong to you and are interconnected. This could be your blog (a1), your LiveJournal page (a2), and your Twitter account (a3). 2. It looks for publicly declared connections between people. For example, a1 may link to b's blog while a1 and c link to each other.
Google+ API https://developers.google.com/+/api/ Searching Public posts GET https://www.googleapis.com/plus/v1/activities?query=cookie%20recipes &orderBy=best&key=[yourAPIKey] People Search GET https://www.googleapis.com/plus/v1/people?query=Khanderao%20kand &key=[yourAPIKey] View People Interacting with Posts GET https://www.googleapis.com/plus/v1/activities/{activityId}/people/resha rers?key=[yourAPIKey] GET https://www.googleapis.com/plus/v1/activities/{activityId}/people/pluso ners?key=[yourAPIKey]
Spring Social Spring Social provides templates for REST based API handling OAUth and providing operations specific to Social Media TwitterTemplate FacebookTemplate LinkedInTemplate TripItTemplate http://blog.springsource.com/2010/11/03/socializing-spring- applications/ http://greenhouse.springsource.org
Technologies for Building Applications on Social Media
Social Media Data Often Needs Different Type of Database Social Media Contains: Huge Data, Often available via JSON, XML , RSS Requires different type of DBs. Couch DB MongoDB Cassandra Hbase Neo4J Hadoop for Big Data Processing
CouchDB MongoDB Data Model Document Oriented Document Oriented Data Format JSON BSON Interface REST TCP/IP Query MapReduce Java Script Jmap Reduce ava Script + Query Fault Tolerance Master Master Master Slave Concurrency MVCC (Versioning) Updates in place Performance Comparatively lower Higher
Dealing with Big Data Cassandra HBase Type Column DB Colletcion- column DB Type Big Table Big Table Protocol Binary (Thrift) Binary (Thrift) HTTP/REST Map Reduce Via Hadoop Via Hadoop
Disclaimer and Request 1. The presentation though quotes examples of my Company and products, the presentation is based on my knowledge and experience and my company is not liable. 2. Attributed to most of the known source, if any attribution is missing, it is not due to intention but might not have got the information of the original source or might be be negligence in my due diligence. It can be corrected if you contact 3. Feel free to share some / all content however please attribute to Khanderao Kand 4. Social Media Networks mentioned in the presentation are more foe example but the approach is applicable to most of all other social media and there is no intention to promote / discourage any media 5. User usage data and financial numbers are dated and would be stale / outdated over a period of time. You may need to look for the latest data. 6. APIs , tools and libraries are third party and not from me / my company. Though they are listed based on my experience and knowledge, use them at your risk. 7. We have products in Social Commerce, Social CRM, and recommendation. We also take projects around the space and can be done outsource / jointly if interested in. Contact : khanderao.kand@glomantra.com or khanderao@yahoo.com Twitter @khanderao For original 際際滷 deck (ppt) feel free to contact.
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Social mediaprogramming part2-java-jax-london

  • 1. Social Media Programming Khanderao Kand CTO GloMantra Inc mybantu virtual personalized Assistance @khanderao Nov 2, 2011 at JAX Conference, London
  • 2. Khanderao Kand CTO of Glomantra and myBantu in Silicon Valley, CA, USA AI based Relevance platform / recommendation technology with Social Intelligence Projects on Big Data, Computing, Machine Learning, Text Analytics, SOA, User Interest profiling, Yield Optimization BIO: 20 years in Industry (currently AI, SOA, Social, Mobile and Cloud Technologies) Lead Oracles SOA and BPM Architecture Chief Consulting Architect for SOA and BPM to 50+ architects & hundreds of developers of Oracles next Generation Fusion Apps Lead Architect of Peopletools Architect in CRM, Online Dialog Marketing, OLAP Hyperion Participated in Standards of BPEL and SCA at OASIS 9 Patents filled Frequent Speaker in conferences Authored articles in JDJ, WSJ, Cloud Computing
  • 3. Agenda APIs, Frameworks and Tools for Social Computing: Key Technologies, APIs Interfacing with Popular Social media Storage Social Media Data Processing
  • 5. OAuth OAuth is open standard for Authorizing Access (typically data access / actions) Oauth hands over access token and not user credentials Oauth is essential to developing social-ready applications OAuth protocol (Dance) involves series of 3 party (consumer browser, Service provider Social media Site and App). OAuth, including Twitter, Facebook, LinkedIn, TripIt, and Foursquare, as well as the Google and Yahoo APIs. Different SM supports either Oauth 1.0 and Oauth 2.0 Visit : http://oauth.net APIs: Jersery (JAX-RS), Spring Security API, Googlecode,
  • 7. Open ID Open ID is open source standard for multi-site authentication OpenId is for authentication as against Oauth No need of adhoc and site specific authentication Oauth and OpenID can coexist Open ID providers : think of Google login Providers pass ID attributes to the relying party (app) However, Oauth is more popular and common in Social Media interfaces Visit http://www.openid.org Java API: openid4java, GAE supports,
  • 8. REST Representational State Transfer (Roy Fieldings paper for Architectural Style over HTTP) Basic GET, PUT, POST, DELETE operations on a resource Internet world REST is currently winning Google, Yahoo, Facebook, etc etc. Java: Jersey (JAX-RS), Restlet, RestFul Services, JAX-WS
  • 9. JSON Javascript Simple Object Notation as lightweight data interchange format Lighter than XML Can be manipulated on browsers No need for parsing into DOM http://www.json.org Java API: GSON, Jackson, JSONLib, FlexJSON XML to/from JSON conversion: JSONLib
  • 10. RSS Really Simple Syndication (originally RDF Site Summary) Started with news, site, blogs update Simple and lightweight Popular Readers: Google Reader, Feedly etc Java API: ROME, Simple XML parsing
  • 11. APIs of Popular Social Media
  • 12. Facebook Graph API Representing objects and relationships in Facebooks social network Simple, consistent and REST style representation Objects: People, events, pages, and photos People: http://graph.facebook.com/659690992/picture Events: http://graph.facebook.com/331218348435/picture Groups: http://graph.facebook.com/69048030774/picture Pages: http://graph.facebook.com/DoloresPark/picture Applications: http://graph.facebook.com/2318966938/picture Photo Albums: http://graph.facebook.com/platform/picture Access API: https://graph.facebook.com/ID/CONNECTION_TYPE
  • 13. Facebook Graph API: Access https://graph.facebook.com/ID/CONNECTION_TYPE Friends: https://graph.facebook.com/me/friends?access_token=... News feed: https://graph.facebook.com/me/home?access_token=... Profile feed (Wall): https://graph.facebook.com/me/feed?access_token=... Likes: https://graph.facebook.com/me/likes?access_token=... Movies: https://graph.facebook.com/me/movies?access_token=... Music: https://graph.facebook.com/me/music?access_token=... Books: https://graph.facebook.com/me/books?access_token=... Notes: https://graph.facebook.com/me/notes?access_token=... Permissions: https://graph.facebook.com/me/permissions?access_token=... Photo Tags: https://graph.facebook.com/me/photos?access_token=... Photo Albums: https://graph.facebook.com/me/albums?access_token=... Video Tags: https://graph.facebook.com/me/videos?access_token=... Video Uploads: https://graph.facebook.com/me/videos/uploaded?access_token=... Events: https://graph.facebook.com/me/events?access_token=... Groups: https://graph.facebook.com/me/groups?access_token=... Checkins: https://graph.facebook.com/me/checkins?access_token=
  • 14. Facebook Search using Graph API All public objects https://graph.facebook.com/search?q=QUERY&type=OBJECT_TYPE All public posts: https://graph.facebook.com/search?q=socialcommerce&type=post People: https://graph.facebook.com/search?q=Khanderao&type=user Pages: https://graph.facebook.com/search?q=glomantra&type=page Events: https://graph.facebook.com/search?q=conference&type=event Groups: https://graph.facebook.com/search?q=programming&type=group Places: https://graph.facebook.com/search?q=coffee&type=place&center=37.76,122.42 7&distance=1000 Checkins: https://graph.facebook.com/search?type=checkin
  • 15. Facebook: Publishing on Wall HTTP Post Access token curl -F 'access_token=...' https://graph.facebook.com/313449204401/likes
  • 16. Example String url = "https://graph.facebook.com/"+facebook ID+"/feed"; String data = URLEncoder.encode("access_token", "UTF-8") + "=" + URLEncoder.encode(ACCESS TOKEN STRING, "UTF-8"); data += "&" + URLEncoder.encode("message", "UTF-8") + "=" + URLEncoder.encode(wallMessageText, "UTF-8"); data += "&" + URLEncoder.encode("picture", "UTF-8") + "=" + URLEncoder.encode(IMAGE URL, "UTF-8"); data += "&" + URLEncoder.encode("name", "UTF-8") + "=" + URLEncoder.encode(POST TITLE STRING, "UTF-8"); data += "&" + URLEncoder.encode("caption", "UTF-8") + "=" + URLEncoder.encode(CAPTION STRING, "UTF-8"); data += "&" + URLEncoder.encode("description", "UTF-8") + "=" + URLEncoder.encode(DESCRIPTION, "UTF-8"); data += "&" + URLEncoder.encode("actions", "UTF-8") + "=" + URLEncoder.encode("{"name": action_name", "link": http://192.169.0.46/app/valid url1"}", "UTF-8"); data += "&" + URLEncoder.encode("link", "UTF-8") + "=" + URLEncoder.encode(LINK URL, "UTF-8"); // Constructing action links JSONObject obj = new JSONObject(); LinkedHashMap<String, Object> m1 = new LinkedHashMap<String, Object>(); m1.put("text,LINK1 TEXT); m1.put("href", http://192.169.0.46/app/valid action url1); obj.put(LINK1 LABEL, m1);
  • 17. Twitter Twitter is ranked as one of the ten-most-visited websites worldwide by Alexa's web traffic analysis. March 2010 10 billionth tweet Twitter has a user retention rate of forty percent. Value: Conversational 30%, Pointless Babble 30%, Promotion 8%, News 8%, news 7-8% and spam Good source: news validation, trend, topic updates
  • 18. Twitter Usage "Twitter Revolutions" and which include the 2011 Egyptian revolution, 20102011 Tunisian protests, 20092010 Iranian election protests, and 2009 Moldova civil unrest Twitter is also increasingly used for making TV more interactive and social Most of the celebrities are on Twitter President Obama and many others effectively used Twitter for campaigning Twitter has become a great source for latest news Twitter is an indicator for buzz around latest topics and trends Brands are using twitters for promotions of products and spreading deals
  • 19. 3rd party Twitter Java APIs Twitter4J : Open Source BSD Java-Twitter Jtwitter : Open Source Twitter Client Streaming API
  • 20. Twitter Twitter API allows to Tweet Direct message Search Get tweets
  • 21. Twitter4J API Twitter4J (third party open source) Access token / consumer key in twitter.properties Twitter twitter = new TwitterFactory().getInstance(); Query query = new Query(mybantu"); QueryResult result = twitter.search(query); // uodate status Status status = twitter.updateStatus(latestStatus);
  • 22. Twitter Fire hose GNIP 50% at approximately 360K per year For analysis but not for resale or display tweets Spritzer 2% random for free
  • 23. Open Social Project "For the question about Google plans to allow developers to create Google+ apps deploying the OpenSocial APIs, a spokeswoman of Google said that by means of email nowadays the Google+ platform cant support the OpenSocial APIs. She also added that nevertheless, they are utilizing many of the technology which was designed as part of OpenSocial, along with the gadget application packaging model, and power Google+ games and the Portable Contacts JSON schema. Because they define the +Platform APIs, they are drawing close attention to the future tendency of the OpenSocial APIs, as well as converging everything possible."
  • 24. Developing Social Network Apache Opensource project in incubation Shindig
  • 25. Open Social Great initiative with huge promise A common open source API for social media launched in 2007 Early movers as open social containers: Google Orkut, hi5, LinkedIn, MySpace, Netlog, Ning, orkut, and Yahoo! Opensource OpenSocial Based container : Apache Shindig Bummer Except Facebook Google+ is not yet committed to Open Social
  • 26. Google Social Graph API By supporting open Web standards for describing connections between people, web sites can add to the social infrastructure of the web The API returns web addresses of public pages and publicly declared connections between them. Allows developers to create a button for a Web site that would allow a registered user to easily "add friends. index the public Web for Friends of A Friend (FOAF) and Friends Network
  • 27. Googles Public Social Graph The Social Graph API looks for two types of publicly declared connections: 1. It looks for all public URLs that belong to you and are interconnected. This could be your blog (a1), your LiveJournal page (a2), and your Twitter account (a3). 2. It looks for publicly declared connections between people. For example, a1 may link to b's blog while a1 and c link to each other.
  • 28. Google+ API https://developers.google.com/+/api/ Searching Public posts GET https://www.googleapis.com/plus/v1/activities?query=cookie%20recipes &orderBy=best&key=[yourAPIKey] People Search GET https://www.googleapis.com/plus/v1/people?query=Khanderao%20kand &key=[yourAPIKey] View People Interacting with Posts GET https://www.googleapis.com/plus/v1/activities/{activityId}/people/resha rers?key=[yourAPIKey] GET https://www.googleapis.com/plus/v1/activities/{activityId}/people/pluso ners?key=[yourAPIKey]
  • 29. Spring Social Spring Social provides templates for REST based API handling OAUth and providing operations specific to Social Media TwitterTemplate FacebookTemplate LinkedInTemplate TripItTemplate http://blog.springsource.com/2010/11/03/socializing-spring- applications/ http://greenhouse.springsource.org
  • 31. Social Media Data Often Needs Different Type of Database Social Media Contains: Huge Data, Often available via JSON, XML , RSS Requires different type of DBs. Couch DB MongoDB Cassandra Hbase Neo4J Hadoop for Big Data Processing
  • 32. CouchDB MongoDB Data Model Document Oriented Document Oriented Data Format JSON BSON Interface REST TCP/IP Query MapReduce Java Script Jmap Reduce ava Script + Query Fault Tolerance Master Master Master Slave Concurrency MVCC (Versioning) Updates in place Performance Comparatively lower Higher
  • 33. Dealing with Big Data Cassandra HBase Type Column DB Colletcion- column DB Type Big Table Big Table Protocol Binary (Thrift) Binary (Thrift) HTTP/REST Map Reduce Via Hadoop Via Hadoop
  • 34. Disclaimer and Request 1. The presentation though quotes examples of my Company and products, the presentation is based on my knowledge and experience and my company is not liable. 2. Attributed to most of the known source, if any attribution is missing, it is not due to intention but might not have got the information of the original source or might be be negligence in my due diligence. It can be corrected if you contact 3. Feel free to share some / all content however please attribute to Khanderao Kand 4. Social Media Networks mentioned in the presentation are more foe example but the approach is applicable to most of all other social media and there is no intention to promote / discourage any media 5. User usage data and financial numbers are dated and would be stale / outdated over a period of time. You may need to look for the latest data. 6. APIs , tools and libraries are third party and not from me / my company. Though they are listed based on my experience and knowledge, use them at your risk. 7. We have products in Social Commerce, Social CRM, and recommendation. We also take projects around the space and can be done outsource / jointly if interested in. Contact : khanderao.kand@glomantra.com or khanderao@yahoo.com Twitter @khanderao For original 際際滷 deck (ppt) feel free to contact.
  • 35. Q&A