Kinset is a new 3D web program that mixes online shopping with the feel of a store. Download the small program and find yourself in a 3D shopping mall which currently only has 2 stores. (one of which is a bookstore which is the primary reason I go to malls).
Kind of a cool idea, though I have been shopping in other 3D programs for some time now, so it seems redundant. It has the feel of Active Worlds too as the camera moves are a little flaky. It could really benefit as a 3D web embed as discussed below.
It is a curiously cool way to shop at Amazon though, and the web integration with 2D information is first rate.