Facebook has grown over 150% in the past year, adding 24m unique visitors in June alone. The website is visited by 340m unique users each month with 250m active users.
In the past year, its traffic figures have surpassed MySpace, Amazon, eBay and AOL, according to comScore.
As it stands, Facebook remains the only website in the top 10 which has yet to figure out a sustainable revenue stream, and it has a long way to go before it catches the top three, Google, Microsoft and Yahoo! -- who garner between 200m and 500m more unique visitors every month.
Yet its growth is significant when considering Facebook's age -- the website has only been around for five years, compared to the established old guard of Microsoft and Yahoo!.
Also, comScore tallies all of the companies websites together -- while Google remains on top at 844m monthly unique visitors, that includes all of its web properties, including Gmail and YouTube -- whereas Facebook only counts Facebook.com.