Google said today it finalised its $12.5 billion deal to buy Motorola Mobility, a key manufacturer of smartphones and other devices.

With Facebook's stock down 11 percent at Monday's close, many retail investors who thought they were getting the hot ticket in town may soon be playing hot potato with their Facebook shares.

With Facebook hogging the spotlight last week and Google working to stay in the game with Google+, Microsoft has quietly launched So.cl, which it describes as a social-search tool to share information and meet people with common interests.

Facebook's lackluster initial public offering performance is a black eye for many on Wall Street and could have ramifications for similar upcoming deals such as an offering by Twitter, but venture capitalists in Silicon Valley are keen to shrug off Facebook's stumble - at least for now.

President Barack Obama speaks during the meeting on Afghanistan during the NATO Summit, Monday, Monday, May 21, 2012, in, Chicago.