Yeah me and some of my friends used it for a while when we were bored in college. We used to pose as teenage girls, seek out the pervs and mess with their heads haha. Was great fun for a while but we got bored pretty quickly. It's mostly full of lonely immature american kids.
Here's a little something i came across though
http://topcultured.com/the-best-omegle-ownage-ever/