Google has publicly released a list of the top 1000 websites in the world, raking the Facebook social networking site as the leading Web property by unique users.
According to Google's AdPlanner stats, Facebook scores more than 540 million unique visitors per month, reaching a sizeable chunk of 35.2 percent of the Internet population.
Facebook not only has the most unique visitors in Google's stats, but also the most page views per month, a whopping 570 billion views, ahead of other properties like Craigslist (#49) with 14 billion views.
The AdPlanner list does not contain any figures for most of Google's own properties, like YouTube, Gmail, News, or Search, but gives an interesting insight into which top Websites do not serve advertising.
Wikipedia (#4) and Mozilla (#10) are the only two Websites in Google's top 10 not to display advertising. A noteworthy entry on the 18th spot in the AdPlanner rankings is Twitter (#18), with 98 million unique visitors per month, which doesn't serve ads.
Destinations portals such as Yahoo.com (#2), MSN.com (#5), Baidu (#8), Sina.com.cn (#11) and 163.com (#15) are also high on the list, probably due to the fact that many people use these sites as their home page.
Search engines also occupy several top places in the AdPlanner list (excluding Google's own Search). Live.com (#2) has over 370 million uniques per month, Bing.com (#13) with 110 million, and Ask.com (#20) with 88 million.
Blogging is also high on Google's list, with Blogspot (Blogger) situated in the 7th place with 230 million uniques, and WordPress.com in the 12th spot with 120 million uniques.
Several news sources made it into the top 100 as well: Cnet.com ranks as #35, BBC.co.uk on #43, CNN.com at #64, and NYTimes.com on #83.
Other entries worth noting among Google's top 1000 websites are Microsoft.com (#6), Adobe.com (#14), Amazon.com (#22), eBay.com (#24), Apple.com (#27) and Hotmail.com (#30).