While I appreciate (the existence of) the service, methinks this is a trademark suit just begging to happen. I mean take a look at their logo [png graphic]. It really looks like an official Google site. In this age of massive information sharing, I have my doubts about patents and copyrights in general.
However with patents, I'd give the trademark owner the benefit of the doubt (you're not necessarily evil if you sue for trademark infringement), unless your trademark happens to be a pure (uncombined) dictionary word (in English or whatever language) or a common or well-etablished proper name (e.g. Smith or Madonna). Thus, I'd throw out any lawsuits involving Apple(tm) or Oracle(tm) but not Facebook(tm), Microsoft(tm), Apple Computers(tm) or Apple Records(tm). Obvious parodies are another matter, so there might be room for site names like Googlevil.
[*] I'm using trademark in the general sense to refer to symbols or names that make up the business identity of a company.