Thanks guys, I will start working on the alphabetical listings. I thought about integrating a user finder / caption search, but I'm wondering whether that might add too much server load, since each row would need to be checked for whether it contains a given string.
Mist, the latest photo that a user uploaded is shown in their profile. Example:
http://www.v-driveboat.com/member.ph...info&userid=42
Overgrow, the sig image is my own creation (idea is filburt1's, though), but if you want some explanation regarding how to create it, just PM me.