archibella... in addition to this, I wipe my chain down after every single ride... I don't clean it every time, but I do take a rag and hold the chain lightly while spinning the cranks... it helps! Also when cleaning chain, don't forget to wipe off the chainrings and cogset...

my brother crashed mtb'ing and has a permanent chainring scar in his right leg... the epitome of a rookie mark! LOL