It would be nice if signatures could be no longer than three or 4 lines long. If people want to put their system specs in their signatures, they can just put all the parts on one or 2 lines, with each individual part separated by a vertical bar or a colon or something. I'd say no images in signatures because they make it too full, and as mentioned before, they make one-line posts too long. I've seen other forums where people had size 20 text; I'm not sure if I saw images, but if too large, they get kinda annoying as well.