Upload & Sell: Off
I believe that the problem with removing previous posts is that it can result in making threads very confusing to follow or even incomprehensible if a significant amount of the content is removed.
Right, all content is FM Forums. If ten people bailed and requested their content be eliminated it would be even more confusing. You still have the complete use of submitted photos, but the written content is what makes up the forum. Try and get Google to delete all your posts from any forum. It ain't going to happen.