Made me laugh a lot. I cringe every time I upload a video to youtube or respond to a comment or make a comment. I know that sooner or even years later, I will get some idiot posting to my comment or video. This guy explains your average person on youtube: http://www.youtube.com/watch?v=gzYgCdi9PjA
It gets worse if you have some very successful videos like I do then get a bunch of subscribers. More of a chance then for retards or spammers.