ScribbleLive allows broadcasters, publishers, educators, corporations, social groups, writers, students, bloggers and individuals to be instant publishers, live to your screen.

Many of us know about StumbleUpon, Digg, Reddit. But here are 12 other social networking sites that are very useful and powerful.

Music, movie, video discovery service.

The service, a device agnostic, SMS-based application, lets you "check in" at various locations out in the real world and then see who else is there, has been there, and who is nearby. You can check in via text or via the web, but text is easiest if you're mobile.