Another "nice to have" thing I've wanted for a while: for plain links that are excessively long, I am "collapsing" them so that they don't mess with the formatting of the comment boxes. You can still explicitly link things of arbitrary length (making normal text appear as a link (php.net)), but using a lengthy URL (https://picasaweb.google.com/lh/photo/ywObKSO0AlKzBeedzVyADi2TBFbFtxRPtqpluxrkO2Q?feat=directlink (picasaweb.google.com)) will attempt to collapse things, like so:

https://picasaweb....O2Q?feat=directlink (picasaweb.google.com)

So the question is: why am I collapsing in certain places, and not others? Well, it depends on your browser. Some of them (apparently Chrome, and IE) automatically wrap links pasted into special "textareas" like the comment box with the correct linking tags. I might try to address this in the future to collapse explicit linking as well, but we'll see.