What are some iPhone free texting apps to meet new people?

I really get board often so I was wonder if there were any free texting apps were you can text people who never met before. Not romanticlly but just for fun. On the is more anon and stuff. It would be even better if there was an app like that for nerdy people like Tumblr fandom lovers. If you know an app like that it would be amazing.

There's Omegel and KIK is what I use.