Have you ever worked with one of those neurotic co-workers who always have a clean desktop? A spotless, void of any mess, dust-bunny, or stray paper desktop that is the envy of everyone occupying the cube farm with you?
I think Einstein said it best: "If a cluttered desk signs a clutter mind, of what, then is an empty desk a sign of?"
Let me translate for you: Beware of neat people. They are probably stupid -- or at a minimum BORING.