Twitter adds activity stream - Groupon admits it's unprofitable - Stumbleupon reaches 25 billion clicks

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Twitter adds an Activity Stream

Twitter is introducing two new activity-centric features Wednesday in a partial redesign of its web application.

The changes, designed to help users more easily discover what's happening on Twitter in relation to them, are reflected in two new tabs on "@[username]" and "Activity."

Groupon updates IPO filing, admits it's unprofitable
When Groupon filed in early June to go public, the daily deals company drew a barrage of criticism for its reliance on an unorthodox accounting practice that masked some of its losses. Bowing to the critics, Groupon amended its IPO filing on Wednesday to strip out the odd metric.

Groupon's initial IPO filing highlighted a nonstandard metric called "adjusted consolidated segment operating income." The unwieldy "ACSOI" stripped out Groupon's steep costs for marketing and acquiring new subscribers -- and it made a big difference in the numbers.

In Groupon's original filing, its ACSOI accounting showed operating income of $60.6 million for all of 2010 and $81.6 million for the first quarter of 2011.

Numbers in an updated filing Wednesday, which removed ACSOI and instead used only standard accounting procedures, were quite different. On that basis, Groupon incurred a $420 million operating loss for 2010 and a $117.1 million loss in the first quarter.

StumbleUpon Button Reaches 25 Billion Clicks
Social discovery tool StumbleUpon has reached a new milestone; its famous "Stumble" button has been clicked more than 25 billion times.

"Today we celebrate 25,000,000,000 clicks of the Stumble! button," StumbleUpon Community Manager Monica Semergiu said in a tweet.

News Corp Says It Lost $254 Million On MySpace

News Corp lost $254 million on MySpace, the company said as it reported revenue that beat analysts' expectations.The loss pushed News Corp.'s Q4 net income down 22 percent to $683 million.

Disappointed' Samsung Fights Apple In Dutch Court, Moto Named Too

Samsung and Apple (NSDQ: AAPL) were set to square off in a court in the Netherlands on Wednesday, after a German court on Tuesday prevented the former from selling its newest Galaxy Tab everywhere else in Europe. Meanwhile, it also has emerged that Motorola (NYSE: MMI) is also named in Apple's Samsung complaint.

The Dusseldorf court had slapped an injunction on Samsung while it works through the details of Apple's iPad copycat lawsuit against the Korean consumer electronics giant.

Update: Another interesting development has also emerged around this story. Looking through the details of the Samsung complaint, the blog Foss Patentshas discovered that another arch competitor is also named:, and specifically the Xoom tablet.

Nokia Says Windows Phone 7 Will Make iOS and Android Outdated

Nokia plans to fight back against the other two dominant platforms with its next generation of smartphones, which will run Microsoft's Windows Phone 7operating system. The company isphasing out its once-dominant smartphone lines from the U.S. market in preparation. Windows Phone OS is a natural choice for Nokia to distinguish its phones from the leading competitors because its underlying structure is different.

Hackers hit Blackberry over riots

A hacker group has attacked Blackberry's website after the company said it would assist police investigating riots.