There seem to be a number of places going on about Google’s Base webapp that is meant to be available at http://base.google.com/. I only seem to get as far as the login, then another screen asking to confirm password. I don’t know what is going on.
Mind you it is probably still in Beta, just like many of the other things at Google, so they will be just preventing people from accessing, just the same way that they prevent too many people from accessing Google Mail (or out with the UK GMail).