I came across this interesting collaborative opinions application called StumbleUpon. If you like web surfing, this is the tool for you.

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.

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