Hacking MS is a good thing. How can you trust a company who can't protect it's own website. Continued hacking(hopefully that will happen) and getting the MS masters(who know Wind0ze the best) to further secure the website, only for it to get hacked again, also makes MS look bad.
It would also be good if it could be discovered how the hacking was achieved. The more script kiddys that do the damage, the worser MS looks.
Only thing im concerned about it that MS may try to track those who h4x0r it. Then they use a huge legal army to charge them. So it would be good if there was a hack MS campaign on the net, and though they didn't tell you how to hack MS or where to get such tools, they would give you advice on how to cover your hacking tracks in general. Im sure script kiddys aren't very good at this, and we can't have the kiddies getting caught by Bill now can we?