Very well put Drtooth and Colby!
It's been said before, but I'ma say one last time: if they would actually spend the money to release this stuff OFFICIALLY on DVD, then people won't have to post it on YouTube in the first place!
There ARE people out there who are willing to spend anywhere between $19 and $50 for things like this on DVD, but these companies like Viacom don't want to spend THEIR money to put them on DVD, and people REALLY want to see them, so what are they going to do? If some lucky son-of-a-gun has it, he's going to post it on YouTube for all to enjoy!
If Viacom is seriously going to try to pull every single "copyrighted" video off YouTube, what's that going to leave us with? Gay guys screaming about people mistreating Britney Spears, punk teenagers beating the crap out of each other, old ladies who have "talking" cats, and like Drtooth said, amateur porn.
You know something? If strikes and boycotts really worked, then I'd suggest everybody on YouTube stop watching videos right away... I mean, if they don't show up on their "history", then Viacom won't know about it right? But then again, this is including PAST viewing history isn't it? So that won't work at all really.
Bottom line. It's sad, but privacy doesn't exist anymore.