Word is they are about to go live with their Google Base. They let you put anything you want up there, tag it, sell it, whatever. Three bog entries that popped up in at http://a9.com/google base
ZDNet says they got confirmation Tuesday from a Google Spokeswoman.
There entries in flickr for screenshots of the new service
ArsTechnica (Ken "Caesar" Fisher's blog) says it's almost up and goes on to speculate:
There's another level to this as well. By letting people post nearly anything, Google will get their hands on a massive database of items that have been given user-created attributes. Google then can use that data to try and generate a kind of universal tagging schema for information and items, which could then be used to classify information across the net.Ohmigod, one uniform language for describing things! These guys are pathologically hopeful.