Well, they wouldn't be posting a meg file. Thats the point. The server takes care of the size and dimensions so they aren't all that hard on all the users. Say I have a HUGE 3200x2400 photo (3.2megapixel) of a race start. I want to attach it. I just upload it as-is. The server takes the file once its received and converts it to a dimensionally-proportionally-equivalent 800x600 which would theoretically be 1/4th the size. So instead of loading up the server with that huge file, its just the small one now.

Plus, if this site is hosted, Rick doesn't need any extra harddrive space, he needs more money to purchase more space from his provider.