If you know who detailed this San Francisco highway sign with "art," you could get a prize. Check it: MNuru, who snapped this shot on southbound 101, says, "If you have info leading to the arrest of those who defaced this hwy sign last wknd on SB 101 @ 3rd&Bayshore streets in my n’hood call 415-695-2003, reward offered upon conviction."

(Thanks, Matt Baume.)