Because some people are just losers. I know who at least one of the people involved in the attacks on ms.org is, and surprise surprise he was involved in attacks on other scripting sites and IRC networks. It's the same stupid little kids each time using security holes in systems of the same stupid idiots who get infected when downloading porn and 'warez' from the same stupid places over and over again. Every time a channel goes down a new one springs up. Every time an idiot finds he's got a dozen trojans on his computer he'll just reformat and then go download them all again within a week. And every time a lamer's botnet or whatever gets shut down he'll just instantly start trying to get a new one because there's nothing else in his pathetic little life.

...Not that I'm bitter...