StumbleUpon has had quite a year. They bought themselves back from eBay and launched a URL shortening service, among other things. Now, they're revealing the most stumbled sites for their historic year that was 2009.
Here they are, broken down by category:
Robot/People Art by Kacie Kinzer - 230K Stumbles
Photographs of and from the Hubble Space Telescope - 219K Stumbles
Default Password for Roadside Led Signs - 184K Stumbles
12 Most Amazing Pools in the World - 196K Stumbles
9 best Train Journeys in the World - 172K Stumbles
Anderson Cooper's Blog: 28 things I wish I'd known before I started traveling - 165K Stumbles