Free Windows??

This site claims to be able to get me free Microsoft software if I send them $4 to tell me how.
Are they telling me how to sign up as a beta-tester?
That what it sounds like, from reading this page. Speaking of which, does anybody know how to be a Betatester for Microsoft, so I get windows for free?

Thanks in advance,

Found the answer to how to sign up as a beta tester.