So I own an adult tube-style blog. And I'm trying to start a contest on twitter where people send in dirty amateur pics. But I'm having trouble finding willing people for submissions... I've been to adult forums recruiting, but with minimal success and it's a lot of groundwork.

What I've done so far...
-created a hastag for the contest on twitter
-posted a tweet to RT to automatically get entered for second prize
-individually DM and IM people on twitter/forums

Does anyone have some good suggestions? You blackhat fellas are smart.

Bumpskies?