Clipmarks - Discover the most interesting things on the internet

Unlike Stumbleupon, Clipmarks is a social bookmarking service. "Interesting things found on the web" refers to users sharing their favorite websites, and it's the users who decide which ones are the most popular, thus giving rise to these interesting things. When registering, you need a username, email, and password, then activate the service through the link in the email sent by Clipmarks.