Modems are irrelevant... the pictures do not show up in the thread, rather as a link under the post title. If modem users don't want to waste time, then thats fine. When I'm at home with the 'rents, I have to suffer on a 28.8 modem, it sucks, I feel your pain, but really, it hasn't anything to do with it.

File size is also irrelevant when it comes to people "messing" with you. I help run a site that maintains an online photogallery of MASS proportions. Over 300,000 page views in a day usually. We have never set a limit on the physical size of the image being uploaded but when we recieve the file, our server resizes it if the image is above 800x600 (maintaining proportionality of course). This way, nobody is denied the ability to post a picture, but at the same time, its not hogging up bandwidth or hindering the modem users.