Having smooth, clean outlines never really seemed worth the amount of time it takes to do.
Especially since, unless you're some kind of genius at inking like Chris Sanders
http://kiskaloo.com/ , it usually ends up sapping the energy out of drawings, making them less funny.
Learning to ink well (heh heh Inkwell) is definately on my list of things to do, but there's other, more important things i need to get good at first.

One day I'll update this website... Oh wait, I just did.