I'm sure ten zillion people have already done this, but...

If you're using Safari, Opera, or any other arguably overly-text-standards compliant browser, and you have your friendslist suddenly get INSANELY WIDE because someone posted a big graphic or some big line of dashes or some other stupid-ass thing, and if that drives you as BATSHIT INSANE as it drives me, you can use the friendslist style sheet I just made to solve that problem. It's based on the default style, it's public, it uses your defined colours. Style number 439972 - la la la!

EDIT: firni tells me that it happens in IE, too. I thought IE force-wrapped the text. It should work fine for IE users, too.