November acquisition of YouTube has had a lot to do with Google's growing user-base, but comScore also attributes the gain to Google's steadily growing share of the search market-now just under 50%.
Meanwhile, products like Gmail and Google Checkout are also starting to add incrementally to Google's massive user-base. "There are some people that like Google, and if Google puts anything out,
they're going to use it," said Search Engine Land contributor Danny Sullivan.
There's a noticeable drop in visitors after the big three, comScore said: Time Warner's sites came fourth with 272 million visitors (a 21% gain from 2006), eBay Inc. came next with 256 million visitors, while Wikipedia had a stunning 82% rise in year-over-year visitors, at 212 million.