Replacement cover art sites
Well with wiiboxart officially closing their doors peoples are going to need new ones.
As of right now I believe the latest USB Loader GX grabs from different sites, but I dont think any others do as of yet. Although i could very well be completely wrong about that.
Anyway, here are a few good sites i've found so far.
Raffles' Wii Box Art
console-covers.com - Home - Also has ps3/xbox360/etc..
Cdcovers.cc / World's Largest CD Covers and DVD Covers Album Art Archive - Has every form of media (dvd/consoles/etc)
And if anyone is wanting 3d covers. Here's a good tutorial on gbatemp on how to create 3d covers from normal box art.
edit: And no the site is back up. The guy has posted like 5x saying he's not going to host it anymore. For a while even the site said it's done. That kid is bipolar. No joke.