You may or may not have heard about AT&T’s Pogo Browser. It’s a “3D Visual Web Browser” (make of that what you will). TechCrunch reviewed it a little while back. It’s based on Firefox (18.104.22.168 to be exact). It has some interesting UI for bookmarking, but other than that, I’m going to have to agree with TechCrunch. I’m really not very impressed.
The impression I’m left with is simply: why wasn’t this created as an extension?