2011 02 14 1133 300x205 Twitter: $10 billion Google acquisition talks just a rumorTwitter is putting a damp towel on the fiery whispering that Google might be in talks to pick up the social darling for as much as $10 billion.

Today at the Mobile World Congress, Twitter’s Dick Costolo said, in response to questions surrounding the much talked about potential $10 billion Google deal, that “I don’t know where these things come from. It’s just a rumor.”

However, on a follow-up question, Costolo was demure on whether the company was talking to Facebook. Similar rumors have put the company in talks with what is perhaps its chief rival.

Facebook does have significantly smaller cash reserves than does Google. Any Facebook/Twitter deal would be very equity heavy, it would seem.

Twitter took its last round of funding, some 200 million dollars in December of 2010, at a valuation of some $3.7 billion. As we noted in our previous coverage of the rumors, Twitter’s 2010 revenue was a mere $45 million, something that makes the $10 billion number feel outlandish.

If Twitter was to sell, who would you want to buy them?