Here's another link, complete with movies of cats in action. (some cats in the videos DO flush... )

http://pottykitty.net/

I think it's a very clever idea, but I don't think I have the paitence for it.

I think it'd be ideal if you had more than one bathroom, but seeing as I have only one, I'd have to constantly move the litterbox just to go myself during training.

I'd also worry about cats missing or if they did not feel well (cleaning loose poops off a toilet seat... )

Again, very clever though! Just not for me. I'll stick to traditional litterboxes.