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Shares of online marketing services provider ValueClick are taking a beating after hours Wednesday following the company's Q1 financial report. ValueClick posted revenue of $152.9 million, up 31% from a year ago, but below the Street consensus at $157.8 million. Guidance had been for $155 million to $160 million.

Google Inc announced a stock split designed to preserve the control of co-founders Larry Page and Sergey Brin over the No. 1 Web search engine, as it posted revenue in line with estimates.

Shares of restaurant reservation service OpenTable are trading higher Tuesday afternoon on better-than-expected results for the fourth quarter. The company posted Q4 revenue of $37.2 million, up 21% from a year ago, and ahead of the Street at $36.8 million. Non-GAAP profits of 37 cents a share topped the Street consensus at 30 cents. The ...

Investors appear to be souring on social networking shares, a development which bodes ill for the eventual IPOs for Facebook, Twitter and other players in the industry. Perhaps unnerved by the lackluster reception for Zynga shares, the sector took a pounding in Monday's trading.

Many retailers are enjoying a Thanksgiving shopping spree lift from investors, but not Groupon. Its shares closed today down nine percent, settling at $15.24 after bouncing off a new low of $14.85. That’s less than half the $31.14 that some investors paid at the stock’s high point, just after it went public in early November. More recently, it has been trading in the low to mid-$20s.

With Google incessantly branching out into even more ventures such as music and social networking, its search business could continue to act as a minor Catch-22 situation in future by helping competition in other business lines.

Groupon, the company that pioneered online group discounts, saw its stock climb by nearly a third in its public debut Friday, showing strong demand for an Internet company whose business model is considered unsustainable by some analysts. Groupon's stock jumped $6.40, or 32 percent, to $26.40 in late morning Friday after trading began at about 10:45 a.m. Earlier, the stock was trading as high as $31.14. Big fluctuations are common for companies that have just gone public as investors gauge what to do with the stock. The stock is trading on the Nasdaq Stock Market under the ticker symbol "GRPN."

The New York Stock Exchange's website experienced slowness for a brief period of time Monday afternoon, on the same day that the hacker group "Anonymous" called for an attack against the Big Board operator's site.

And so it begins. After Yahoo this week gave CEO Carol Bartz the axe, the stock rallied on the suspicion on the Street that the company almost certainly has now been put into play, and might not last very long with its current corporate structure.

AOL had a record decline in New York trading after reducing its annual earnings forecast, raising concerns that the company may not be able to turn itself around following the 2009 spinoff from Time Warner. AOL fell $3.88, or 26 percent, to close at $11.19 in New York Stock Exchange trading, the biggest drop and the lowest level since the spinoff. Earlier, the slump prompted a so-called circuit breaker that temporarily halted trading.