Facebook Overthrows Yahoo To Become The World’s Third Largest Website

We’veseen this one comingall yr. Facebook is now the third largest website in the world, taking the No. 3 spot from Yahoo, according to comScore. Facebook drew an estimated 648 million unique visitors from across the globe in November, 2010, compared to 630 million for Yahoo. In October the two sites were dd even with 633 million worldwide unique visitors ch (actually Facebook had alrdy passed Yahoo by a smidgeon in October with about half a million more visitors). The only two Web properties left which are bigger than Facebook are (869 million worldwide visitors) and Google (970 million) when you look at all of their sites collectively.The evidence lding up to this overthrow has been building up for a long time. Facebook became thefourth largest Websitein the world nrly 18 months ago, and quicklypassed Yahoo in pageviews.Today, Facebook accounts for nrly aquarter of all display adsin the U.S., which is more than twice as much as Yahoo.Facebook also recently passed Yahoo to become thesecond largest sitein the U.S., and is also the ssecond largest source of traffic(after Google) to other sites on the Web. No wonder Yahoo CEO Carol Bartz sees Facebook asher biggest competitor, not Google.In the U.S., however, Facebook is still No. 4 in terms of total monthly visitors (with 152 million), and Yahoo is No. 1 (with 181 million). So not all is lost. Note also that these comScore visitor estimates are different than Facebook’s official user s which are somewhere north of500 million worldwide, but they are better for making s-to-s comparisons between sites.