Netcraft reports there are now more than 101,435,253 websites on the Internet, up from 97.9 million sites last month.
The 100 million site milestone caps an extraordinary year in which the Internet has already added 27.4 million sites, easily topping the previous full-year growth record of 17 million from 2005. The Internet has doubled in size since May 2004, when the survey hit 50 million.
Blogs and small business web sites have driven the explosive growth this year, with huge increases at free blogging services at Google and Microsoft. Domain industry juggernauts Go Daddy (U.S.) and 1&1 Internet (Germany) have also seen strong demand for low-priced domain names and shared hosting accounts.
You can check out the full report at Netcraft. The report also includes the market share for the most used server software.