Here is an interesting technology that Microsoft Labs is currently working which is an image browser which meshes like images togather. So for example you could possibly stuff all of the images from flickr into this Microsoft application called Photosynth and it would sort through the images and mesh all of the images of a location into a kind of VR walkthrough. So if there were a bunch of images of the London Bridge or some such the Photosynth technology would allow you to move around as if you were in a 3D environment and it would stitch all of the images available into a 360 degree view. You really need to watch the video to figure it out as it is somewhat hard to describe. This might be a good base for a 3D web browser.