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Facebook filed for an IPO on Feb. 1 but has since amended its registration document twice. Here are four important things to know about the world's biggest social media company.

Yahoo! Inc.'s (NASDAQ:YHOO) stock may be valued too cheaply by the market, according to Dan Loeb, a New York-based hedge fund manager.

Stocks rose at the open on Tuesday on easing concerns about the euro zone's economy and after a report showed better-than-expected retail sales last month.

Shares of Yahoo (Nasdaq: YHOO) rose slightly after the company sued Facebook for alleged patent infringement. Facebook denied the charges in a statement but has not filed a legal response.

Yahoo Inc sued Facebook Inc over 10 patents that include methods and systems for advertising on the Web, opening the first major legal battle among big technology companies in social media.

Yahoo, the No. 2 search engine that just hired a new CEO, could threw a wrench into Facebook’s proposed $5 billion initial public offering by suing for patent infringement.

It's been alluded to for weeks, but now it's official: Yahoo CEO Scott Thompson has led the company to formal action against Facebook over alleged patent infringements.

Facebook Inc added 25 banks to help underwrite the company's initial public offering, meaning most of Wall Street will have a role in the share sale, according to an amended IPO filing on Wednesday.

While a bill to bar lottery winners from collecting governmental food assistance has been pushed and discussed in the Michigan Legislature, Amanda Clayton, who won $1 million last fall, reportedly still, collects $200 worth of food stamps a month. According to Yahoo news, the 24 year-old from Lincoln Park, Michigan said she will continue to collect her benefits until she is officially cut-off, despite her mega win.

The Internet company plans a major restructuring of operations that will likely include thousands of layoffs, reports said. CEO Scott Thompson could announce the changes as soon as the end of March.

Yahoo Inc is planning to undergo a major restructuring of the company, which will include lay-off of many employees.

Yahoo Inc's new chief executive is preparing a significant restructuring of the Internet company, including layoffs that could cut thousands of employees from its payroll, according to a technology blog.

Yahoo’s new CEO Scott Thompson is already beginning to overhaul the corporate structure. A report says that “multiple sources both inside and outside” Yahoo say Thompson is preparing large-scale restructuring, which includes “layoffs that are likely to number in the thousands.”

The Magic feel recent talks with Dwight Howard could bode well for the organization.

Yelp, the San Francisco-based review website, raised $107 million in its initial public offering and priced its shares $1 above prior expectations.

Only three weeks after launching the Habit Heroes exhibit at its Florida theme park, Disney has been accused of fat-shaming victims of weight problems. According to USA Today, The National Association of Fat Acceptance accused Disney of using the tool of shame to reach children. Critics have virulently lashed out at the exhibit, calling it ineffective and insensitive and Disney has responded by closing down the anti-obesity exhibit, closing down the exhibit's website f...

Facebook has unveiled new ways for businesses to reach its 845 million users directly across all devices, including mobile, as it races toward a multibillion dollar IPO. With new Premium on Facebook ads, marketers can expand their reach on the social network by paying for a video.

Facebook has unveiled new ways for businesses to reach its 845 million users directly across all devices, including mobile, as it races toward a multibillion dollar IPO.

Yahoo could be trying to boost its acquisition value by demanding licensing fees from Facebook for the use of its technology, as the one time Web-pioneer considers strategic M&A options, according to patent experts.

Yahoo has demanded licensing fees from Facebook for use of its technology, the companies said on Monday, potentially engulfing social media in the patent battles and lawsuits raging across much of the tech sector.

Yahoo doesn't like Facebook anymore. The search engine has defriended the social networking giant and threatened to sue over patents that Facebook has been using without paying the necessary licensing fees. Yahoo set a precedent for internet company patent claims after successfully suing Google in 2004.

Internet giant Yahoo could throw a wrench into Facebook’s planned $5 billion IPO by demanding that the social-networking company enter into patent licensing agreements.

Stock index futures rose in low volume on Tuesday a day after the S&P 500 hit fresh 4-year highs and ahead of economic data and this week's liquidity injection by the European Central Bank aimed at supporting the euro zone's ailing banking sector.

Yahoo has demanded licensing fees from Facebook for use of its technology, the companies said on Monday, potentially engulfing social media in the patent battles and lawsuits raging across much of the tech sector.

Yahoo has threatened Facebook with legal action if the two Silicon Valley giants can't agree on licensing of technologies covered by patents on which Yahoo says Facebook is infringing.

Daytona 500 is scheduled to start at 7 p.m. tonight.

Shares of Alibaba.com, an e-commerce company have risen 43% early Wednesday after resuming trade encouraged by the news that it would take the company private.

Alibaba Group, the Chinese e-commerce company, proposed on Tuesday to privatize its Alibaba.com division.

Jack Ma's Chinese e-commerce firm Alibaba Group has offered around $2.5 billion to take its Hong Kong-listed Alibaba.com unit private, stressing the move was unrelated to any possible deal to buy back shares owned by Yahoo Inc.