Executive chairperson of Google Eric Schmidt has described China as "the most egregious" example of a nation attempting to control the internet.
Google is understood to be in negotiations with major music labels over launching a streaming service, similar to Spotify, later this year.
Ev Williams and Biz Stone have launched two new websites in what they hope will prompt an "evolutionary leap" in online sharing.
Google faces a fresh privacy blunder after it admitted it had not deleted all the private data, including emails and passwords, it secretly collected.
Apple has released the latest version of its Mac operating system, dubbed OS X Mountain Lion.
Microsoft's acquisition of Yammer has stepped up the software giant's battle with Google for the future of technology in the workplace.
Twitter has revealed its top hashtags of 2011, showing what the world's tweeters had on their mind.
From Charlie Sheen to the Arab Spring, Twitter has revealed the most talked about #hashtag topics for 2011, with events in Egypt leading the pack.
Facebook has confirmed it is stepping up its assault on the potentially lucrative location-sharing market with the acquisition of Gowalla.
Producer of Farmville and Mafia Wars will become third-largest US gaming firm at $7-billion market cap if it succeeds.