An exclusive Reuters report discloses Facebook's revenue to have done very well in the first half of 2011.

According to the Reuters report, Facebook's revenue doubled to $1.6 billion in the first half of this year, as revealed by an unidentified source who knew well about Facebook financials.

Net income in the noted period reached almost $500 million, according to the source. Facebook does not disclose its results, hence, Reuters kept its source anonymous.

This developed as investors have pushed Facebook valuation to roughly $80 billion in private markets. Industry analysts even expect the top social network to go public next year.

Facebook apparently maintains its desirable image to both users and advertisers. Google's own social network Google+ has yet to make an effect on Facebook this soon, possibly because Google+ is not yet open to the general public. However, after gathering over 10 million users in its first two weeks in June, Google+ curiosity and interest have cooled down.

Reuters noted that according to documents that Goldman Sachs furnished for clients during a share offering this year, Facebook earned $355 million in net income in the first nine months of 2010 on revenue of $1.2 billion.

With 750 million users, Facebook is a force to reckon with among social networks today. It is even believed to have caused the pressure at Yahoo, which recently fired former chief executive Carol Bartz on Tuesday.