What the anime never gave us:
Dangit, I can't get it be a shrunk-down picture that you can click for the full-size picture. (I think it has to do with how Imageshack redid their site look)
Edit by mod (xris): It's easy, you just select the
Thumbnail Code: Forums or
Thumbnail for forums (1) option
EDIT: Fyi, that's how I used to do it before. But now, (1) would put up a full-size picture instead of the shrunk-down thumbnail link, and (2) would give a non-thumbnail link.