Related link: http://www.wired.com/wired/archive/12.05/view.html?pg=3
Lucas Graves interviewed Earthlinks Chief Privacy Officer, Les Seagraves, about fighting spam. He mentions AOL, Yahoo!, and Microsoft a couple of times, saying
As long as there’s something threatening to put them [spammers] out of business or make them pay a lot of money, they’ll think twice.
Maybe Microsoft’s legal department will turn out to be a force for good.