Well honestly, as far as I know how strict the billers are with regards to our content, I somehow don't understand how can ANY biller process for the user submitted content sites.
One as I believe to be a legit site with user submitted content is
www.watchme.com , but that's a different model and anyone who wants to submit have to register first I assume, plus I also guess lots of the content is simply purchased home made content and they have licenses for that.