pretty impressive croquet

I've looked at this before, and I'm still pretty impressed with what this project is capable of. If people were willing, it could be the next stage of internet. The only problem is that we have little use for actual 3D environments on the computer, except in specialized circumstances. This "portal" idea looks quite remarkable though and the idea of personal spaces, collaborative work, and other examples they have are nearly ingenious. Give it a looksie. In particular the screenshots.