A really nice thing to see on this site would be the option to specify a forum signature. ^^ Just a suggestion... don't know if anyone else feels the same way.
The quick biography was our way to allow for sigs without going for clutter. If there's enough interest we can always put sigs in, but make them off by default.
I personally think they just clutter the page, but we're not against people pimping their links either, so maybe we can through them in as an optional display.
I didn't even realize there weren't any sigs on here. I love it for all the reasons everyone's already suggested. But if people really want 'em, my two suggestions are:
1) Change the Quick Biography link to "Quick Signature" and let users enter whatever they want in their profile so it shows up when someone clicks that link. (favorite quotes, images, links, etc.)
2) Let users enter the standard forum sig somewhere on their profile. But, let users also choose to either turn on/off signature viewing. So that way if you don't want to see any sigs, just click the VIEW SIGS OFF button in your profile. (I say this knowing next to no coding at all, merely assuming it's super easy to do... )
But my vote is still to keep things as they are now.
I sorta got my hand slapped over at wizard because my sig was "getting very large in size," and I guess I was cluttering the boards. Yet surprisingly the mod had a pretty big one and others have had the huuuuge ones of animated gifs of Marvel vs Capcom and such. I had a link to this site with a tiny logo, an animated Jay and animated TARDIS. Oh I think I also had the Hal Jordan pic from my blog. They were all re-sized so they weren't that big. But I do get the clutter thing. These boards do look nice and clean especially with the white background.