It's in a BETA stage, it's perfectly legal! John123, please PM me the key..
edit... just to clear this up...
BETA software is licensed from Microsoft under a simillar EULA agreement, as when they sell software (except with extra discalimers), Microsoft issue Keys to people as they download, if you sign up to Microsoft as a beta tester, then you open an accoutn and get to see some great software first (before other people)...
if this key really is free and given away by microsoft then why don't you follow the link given at the start of the post?
the fact is that it's not free, -that's why you can't just follow the first link!
it's not given away, the RC1 candidate is supposed to be realeased to a select amount of people that report to microsoft, not shared via forums with Keys being passed around in posts or private messages