The landing page doesn't have enough information for me to want to register, perhaps some screenshots of the user area, at least?
Mine: undercoversanta.com (also early early beta - too late for this year's gift season).
Mine's more early alpha stage (and on hiatus) as attempting Facebook integration was biting off a little more than I can chew...
I still think there's a lot of mileage in the concept though as I think there are some pretty key features (other than vendor independence...) that Amazon's wishlist and Best Buy's Giftag are missing. Happy to talk