The person running it, Dodger I believe, pulled all of their webpages down around the same time. There's all sorts of things we can speculate on as to why. I would assume they lost interest in 3D as a hobby and have moved on in their life to something less costly. They also ran http://www.xfx3d.net/ and it's been gone since Whatever3D went down as well. The Wayback Machine's last sighting of XFX3D was in 2009 actually and Whatever3D's last appearance was on March 6th 2009.