1. This document discusses several mobile apps and companies that gained popularity after being featured at the South by Southwest (SXSW) conference, including Twitter, Foursquare, PhoneBooth, GameSalad, Foodspotting, and Tim Ferriss.
2. It also covers Chinese mobile apps and companies like ChinaMode and NTALKS that have grown in popularity in China. ChinaMode held talks about location-based services and mobile trends in China.
3. The document promotes TechNode as a source for news and analysis on the Chinese technology industry. It provides contact information and ways to follow TechNode on social media.