In relation to Google owning lots of domains, some of you may know that they are an ICANN accredited registrar (have been for sometime now), but they don't sell domains to the public (for now anyway). http://www.searchnewz.com/searchnewz-12-20050906GoogleICANNSeeYourDomainInfo.html
Google doen't seem to be registering domains through themselves. I think they're an accredited registrar so they can access whois data and use it in the ranking algorithms.
I also found many in my logs in the morning, but just laughing here quietly google.com gppgle.com goggle.com googlr.com googlee.com haha
Would it be legit to host a site like hoogle.com , make it look like google and place an "Adsense for search" bar on ?
I am sure nobody has ever visited that site until you included it here! I wonder if it ever received any visits before being listed here.