It's just like Google's normal search except that it autocomplete's your typing with popular search term suggestions.. complete with predicted number of hits in the dropdown! Very impressive :)
It is not like Google Desktop or your own browsers' autocomplete inasmuch as keeping track of your own searches, it only suggests out of a pool of globally popular searches. I find it to be very very very *fast* considering that it calls back to the server as I type (about 1/5 of a second per character on bendcable). From a "guess what I'm about to say" perspective it is entirely phenominal. :)
(PS, We got our kitty back.. he just sauntered back home after about a week and a half; what nerve ;) but now Christian is in the hospital with asthma related woes :( )