For a few months now we have politely asked a site (allgamesbeta) to stop just taking our HQ publisher videos and post them on mega for their own financial gains. Three times they accepted to at least source us for the videos, but after a few days they always go back to their old ways. We are fully aware that we do not own this content, since it's posted untouched from a publisher, but in most cases getting these high quality videos is the result of years of good relationships with publishers, and seeing them immediately posted somewhere else is extremely annoying, to say the least. So if this site doesn't immediately stop posting these videos (even with a link back here), we will have no choice but to watermark all the publisher videos we get, even though I'd absolutely HATE having to resort to that.
Update: Looks like we managed to talk this out, and watermarks are not on the way. Let's all rejoice :)