Originally Posted by Scrodzilla

I'm obsessive about keeping my drivetrain clean but you should know when your stuff is getting gunky. Just please remember that if you're ever just giving your chain a quick wipe down while installed, keep your digits away from the cog/chainring and go s-l-o-w. I lost a chunk of my thumb last year (that somehow managed to grow back!) and I've seen quite a few horrible pics on Sheldon's site of mangled/missing fingers.