Social-networking powerhouse Facebook saw its revenue climb as high as $800 million in 2009, $100 million more than previously estimated, according to a media report.The Reuters news agency reported the higher revenue, citing unnamed sources. One of those same sources told the agency Facebook had also seen net profits in the tens of millions of dollars last year, Reuters said.Industry blog Inside Facebook had previously estimated that Facebook made as much as $700 million in revenue last year, and Facebook board member Marc Andreessen said last year that the company would surpass $500 million in revenue for 2009.