Music company lawyers first warned and then sued individual users who downloaded their songs. Now it looks like piracy hunters for the movie studios are using the same technique against YouTube users.
YouTube's decision to help Paramount track down Moukarbel stands in stark contrast to the philosophy of Google, which has fought the U.S. Justice Department over attempts to access data about consumers who use its search services.

I'm confused, YouTube = Google's now, shouldn't they be under Google's philosophies? (Was Google even involved here?) Or is YouTube autonomous?

It doesn't matter what company name or entity they use. Copyright infringement lawsuits are going to become big business now as media companies struggle to control digital media. Social networking sites (ones that allow users to post copyrighted information) are next in the battle.