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A U.S. court has ordered Twitter to hand over details of the accounts of WikiLeaks and several supporters as part of a criminal investigation into the release of hundreds of thousands of confidential documents.

Apple Inc joined a growing number of U.S. corporations that have cut ties with WikiLeaks, removing an application from its online store that gave users access to the controversial website's content and Twitter feed because it violated guidelines.

Twitter has raised a big new round of venture capital, $200 million, valuing the company at $3.7 billion.

So many people love Justin Bieber. They love him so much, that this year Twitter changed the way it counts its most tweeted-about topics to effectively exclude him....

Both Facebook and Twitter have closed accounts corresponding to Anonymous, a formerly 4chan-linked group organizing a string of DDoS attacks on organizations that refuse to work with WikiLeaks.

The social site denies altering the trending topics section.

Russian President Dmitry Medvedev published in his twitter page his recent experience of the Samsung Galaxy Tab after purchasing one.

The whistleblower website WikiLeaks is under cyber attack, but even if it goes down, a new cache of leaked U.S. diplomatic cables will still be published tonight, it said via Twitter.

Evan Williams, Twitter's co-founder, says he understands Facebook's reluctance to let Twitter users look up friends on Facebook or send Facebook posts to Twitter. But the two companies are still talking.

When Leigh Fazzina had a bike accident, she used Twitter to get help. Here are five things you can do right now to program your cell phone to save you.