No, I haven't heard of this guy named masoumi from GameStop. I have a job that I like to hold down that helps in paying the inevitable bills. Because of this, I can't spend an ungodly amount of time surfing various message boards that are almost certainly guaranteed to be Wombat-less.
Nevertheless, mousami seems moderately interesting and may even serve as a decent sidekick on a gaming show. However, this is a quickly formed impression since I don't have time to watch all of his videos.