Here is a list of 'high res' sites worth checking out if you are hunting for images...

Want to add to my list?

4chan /hr/ http://orz.4chan.org/hr/imgboard.html
moeboard http://www.moeboard.net/
Some boards on http://iichan.net are worth mentioning (They broke the Touhou board though)
http://www.masterbloodfer.org/ (Some of the covers are excellent)
http://www.pireze.org/blog/ (You need to hunt around on the site)
http://web.mac.com/spiralsword/iWeb/Saikusa/Saikusa%20Taisen.html (Why waste downloads on MT when you can get them directly from here?)

I'm not going to mention Minitokyo, or Animepaper though.

Bittorrent !

Especially big batches of magazinse, comiket stuff or even archives of artists...

MDGeist said:
Bittorrent !

Especially big batches of magazinse, comiket stuff or even archives of artists...

True. Always worth watching /t/ or http://tokyotosho.com/index.php?cat=5