It seems that Facebook is managing to do very well for a site that many had said may never see any real revenue generated. Indeed, signs point to some very big numbers for Facebook.

Facebook never really comments in any detail on its finances...

According to InsideFacebook, the last time Facebook openly discussed its revenues in pretty much any way, shape or form was when it announced in September of last year that it had become “cash-flow positive” which, sadly, doesn’t tell us all that much about it. That didn’t stop speculation though, which pegged it at somewhere around the $550 million mark for the year just gone. Still, if the news from today is anything to go by, Facebook did a little better than that.

More recently, industry analysts have suggested that Facebook made somewhere in the neighbourhood of $635 million over the course of 2009, which isn’t bad going at all. Still, things look even better for Facebook over the coming ten months or so, with those same analysts estimating that the social networking giant will make somewhere in the region of $1-1.1 billion over the course of 2010, growth of more than 30% in a single year.

It’s a very interesting report indeed, and one that takes into accounts some of Facebook’s more recent moves with regard to advertising and businesses. Still, one of the most interesting revenue streams for Facebook will likely be money spent by users on virtual goods.

Given that Facebook has long since introduced the idea of Facebook credits, which can be used variously to buy birthday cards, virtual gifts and, if you’re in the right locale, songs, it seems clear that that revenue stream could well grow as more valuable virtual goods are added. Moreover, Facebook has made its virtual currency more prominent with its progressive redesigns, indicating that it’s something to keep an eye out for.