The social networking space may see more action in coming days as Software Giant Microsoft Corp is planning to invest in Social networking website Facebook. The company plans to buy up to 5% stake in fast growing online social network with an investment of nearly US $400 million.

Google has also shown interest in buying stake in Facebook, but there has been no official statement regarding the issue. Google also operates a social networking website orkut. Microsoft will get better access to a very huge user base of Facebook after this investment.

A recent report by Wall Street Journal said, "Microsoft has considered trying to buy the company outright, but people familiar with the matter said it's unlikely at this time."

Facebook already has an advertising deal with Microsoft and with this investment of Microsoft, Facebook users may also see new features being added to facebook.

Facebook is owned by Mark Zuckerberg, who at an age of 23 might be successful to get valuation as close to US $15 billion for his online social network.