Microsoft May Invest in Facebook At $10 Billion Valuation

Facebook may be worth $10 billion, at least to Microsoft, says the Wall Street Journal. Someone leaked to them that the two companies are in discussions to take a Microsoft investment of $300-$500 million for 5% of the company.

Here’s the (free) Reuters angle on the story. They’re saying Facebook may be holding out for a $15 billion valuation. What the hell. Why not?

The two companies have had an advertising relationship since late 2006. The WSJ is also hedging strongly on the story by saying that the discussions are still preliminary.