Great idea. Unfortunately all of the people I was paired with wanted to draw pictures of penises, scribble over the whole thing, or leave after 15 seconds.
Yeah.. I'm still trying to figure out how I should tackle the issue of just trollers. I was considering as soon as the current user wants to draw with a different person, they'll never get paired up with their previous partners for as long the session on the website lasts for. And it just keeps track of who they rejected.