Microsoft has had open source code earlier also. But it's been licenced with bsd kind of licence. The problem is that if there are gpl-licenced code taken (doesn't need permission of project owners) microsoft has to give all changes they made to public. Gpl can also touch so depends what they've done with/to that they might also need to distribute more code of theirs. There is also organisation who's trying to track down and sue corporations violating OS licences (can't remember name), maybe they get some job to do.

Yea i thought same thing :)

I agree, but we need to remember that Microsoft's site is mutch larger than Apples. Small sites are always easier to keep in way that navigating between sites are easier and you always find site you are looking for.