Now to try and work out how it works :)
I can find a match on the results with Teoma for some direct queries but not on others. Certainly the results are completely different from DH if you look at the DH drop-down. How the UK filter works, or what triggers certain answers to be pulled from the DB are going to be the subject of some research.
I've just whacked a travel booking site into Teoma to see what happens in AJ. I'll keep you posted ;)
glad to see you join us on the forums.
hopefully, you'll post in the Ask Jeeves - Teoma [webmasterworld.com], forum as well.