Chaturbate lets you embed the top room. Or an iframe with the top girls.
I put an iframe of the top rooms right below my related videos. Click on the room and it opens another tab with the room. You leave your url though. But I know they have API tools maybe you can work with.
http://icadult.com/teenage-sex-kittens-13/
I want to buy some ads this weekend on plugrush and see how this works.
What do you think?