#8: We can divide social software in several categories. Social networks as new genre od social software. This category merges features of all the other genres of social software. (Such as) Examples are MySpace, LinkedIn and Facebook. Then we have Media sharing sites. Examples are YouTube as video sharing site, Flickr as photo sharing site and ݺߣShare as presentation sharing site. Following are Social bookmarking sites. Examples are Delicious and StumbleUpon. StumbleUpon is also content discovery service. Than we have Wikis. Example is Wikipedia. Blogs on various blogging platforms and microblogs. Most popular micoblogging platform is Twitter. All the given examples of certain types of social software are the most representative examples in respect with the number of their users and they are included in our survey.