Microsoft.com has better results IMO.
MICROSOFT.COM.WILL.BE.BEATEN.WITH.MY.SPANNER.NET
MICROSOFT.COM.SHOULD.GIVE.UP.BECAUSE.LINUXISGOD.COM
MICROSOFT.COM.OHMYGODITBURNS.COM
MICROSOFT.COM.IS.A.STEAMING.HEAP.OF.FUCKING-BULLSHIT.NETThat's been around for more than 10 years, the reason is that whois is doing subtring matches.
Blackhat SEO stuff. Easy to fool google suggest also.