Maybe we should have a limit on the file size that can be posted in this thread?
I don't know about anyone else, but I frequently find myself getting annoyed while I wait for pages with lots of large images (like in the challenges) to load.
Oakseed's Vampire sketch (which is great, by the way) is 784K - if you get a whole page (15 posts) of that kind of size, that'll take a while to load, even on a fast computer. If more than 15 people post per day, that's going to be a lot of waiting.
So, I propose a file size limit of no more than 150K - people need to learn to compress.