YouTube created an online town hall to get the public interested in issuesthat matter the most. See this infographic for the most viewed topics and which issues received the most votes.
Foursquare introduced Tip Lists to help users create, share and update lists of all kinds.
LinkedIn updated its iPhone and Andriod apps with an emphasis on speed, simplicity and Groups. The new apps have four key areas: Updates, Inbox, You and Groups.
Klout has added five new networks, now allowing you to connect up to 10 networks with Klout. Your influence can now be measured through Blogger, Tumblr, Flickr, Instagram and Last.fm.