Or you could say it's a ripoff of zippily.com which I did four years ago over the weekend after Google released their Ajax Search API.
Except that live search was already something that was happening on lots of sites back then. By now it's hard to see that instant searching is even novel, much less a ripoff of any other interface.
Google putting their completion together with their instant search (an opportunity not available to API users, of course) is pretty neat, though.
