StumbleUpon

StumbleUpon Reviews

StumbleUpon is an intelligent browsing tool for sharing and discovering great websites. As you click Stumble!, you'll get high-quality pages matched to your personal preferences. These pages have been explicitly recommended (rated I like it) by friends and other SU members with similar interests. Rating these sites shares them with your friends and peers you will automatically 'stumble upon' each others favorites sites.

This is an awesome extension for Firefox! I've been using it for a week or two now and I'm hooked. It's is being hyped as channel surfing for the web and that is a pretty good description. It is kinda like flickr for the web. you select what stuff you are interested in and click stumble. Rate the page with thumbs up or down and even include comments. You find all sorts of strange/fun/interesting stuff.