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While some Twitter users reported intermittent updates via TweetDeck dashboard applications, the short-message website was down for many late Thursday morning.

Triple jumper Voula Papachristou was expelled from Greece's Olympic team Wednesday for her comments on Twitter mocking African immigrants and expressing support for a far-right party... Commenting on the widely reported appearance of Nile-virus-carrying mosquitoes in Athens, Papachristou wrote: "With so many Africans in Greece, the West Nile mosquitoes will be getting home food!!!". Her tweet prompted thousands of negative comments that snowballed Wednesday.

Once relegated to sleazy red light districts and the darker corners of the internet, porn stars are now gaining followings in a surprising place: twitter. They are using the social media site to engage directly with their fans and build their individual brands.

Everyone's made a joke they thought was funny only to see it fall flat, but Park Jung-geun's attempt at humor could see him jailed for up to seven years in South Korea. Park, a photographer by profession, re-tweeted some messages from North Korea's official twitter feed, such as reports on the late leader Kim Jong Il's travels across the country and negative tweets about South Korea.

A New York judge has ordered Twitter to give prosecutors tweets and account information from an Occupy Wall Street protester who was among 700 people arrested during a march on the Brooklyn Bridge in October.

On most days, Twitter is now generating the majority of its revenue from ads shown to its users on mobile gadgets, rather than from ads on Twitter.com, company executives said. One key reason: People who see a Twitter ad on their phones are more likely to click or interact with it in some way, which is how Twitter gets paid for advertisements.

Some of the results are predictable: yeah, we know, ladies loooove Pinterest (15.4 million more monthly female visitors!) and Reddit is inundated with sexist dudes. (74% of users are men.) But did you know that 62% of Twitter users are women? Or that a shit ton of men are still refusing to give up on Google+?

Social media's quippy queen Kelly Oxford goes from tweeting to screenwriting on the strength of her posts, snagging a book deal and reeling in Hollywood fans like Jimmy Kimmel. From a snow-crested corner of Alberta, Canada, Kelly Oxford made her Hollywood screenwriting dream come true. She did it without leaving her close-knit family or giving up her free nationalized healthcare. She did it 140 characters at a time.

President Obama's order Friday suspending deportations for some young illegal immigrants sent a charge through social media over the weekend, with both the president and his Republican challenger seeing steep spikes in online chatter about them. According to the social media analysis firm VoterTide, about 52,000 messages about Obama were posted to Twitter Friday, a 74% jump over his daily average of about 30,000 and the highest number of mentions since he announced his support for gay marriage May 9. The firm did not offer an estimate of how many of these tweets were positive or negative.

Co-founded in 2009 by Twitter cofounder Jack Dorsey, Square enables people to accept credit card payments on iPhone, iPad or Android devices... In a move that positions the company for a potential initial public offering, Square has hired former Goldman Sachs and Salesforce.com executive Sarah Friar as chief financial officer.