LVLSHOT is still working; Fury just edited it out of the posts.
LVLSHOT resizes an image to a width of 640, while keeping the height proportional; and it inserts a link to the non-resized image. This is so that large images don't stretch the post over the edge of the screen. It doesn't do any sort of thumbnailing though, so you still have to wait for the large image to download.
As an unintended side effect, it can also be used to stretch smaller images to a width of 640. That's what the smileys were doing. But that's a super-secret in-joke, meant to be used sparingly.
