Actually, we don't find 600x450 to be unrealistic, IanB. For the very reason you stated, we have decided on that particular size to prevent breaking forum format. We are also taking into consideration that not all of our members are on highspeed internet connections. Just as we make certain our site is viewable by as many browsers as possible, we want to make sure the people on dial-up can enjoy our site, without putting too much of a crimp in anyone else's style.
As far as bandwidth goes, Jac and I live in a rural area and the only option other than dial-up was to pay for anything over 5GB per month, which does get expensive at $.05/MB. It does affect us, because we have to keep an eye on all threads here and that means downloading images in posts and signatures. Luckily we have free server space, so at least that isn't a problem for Wolflore itself. One of our moderators is on dial-up, however.
So far, 600x480 has been satisfactory, since anyone is welcome to upload their image as an attachment, or link the smaller image to the original off-site. I'm sorry, but I don't see this limit being raised any time in the near future. Thank you for your suggestion, though.
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