Everyone is hoping this was a clue, but there's no way of knowing if it was a clue or not. I sure hope it was. If those guys do have valid information, let's hope they find better ways to tell what they know. Using a pay phone to report tips would keep them anonymous. It's also less work than hauling a ladder and climbing upon a billboard.What interests me the most is to know who "wrote" on the billboard and how they acquired that knowledge. Also, why not be more direct, and why commit a crime (vandalising) rather than posting a tip to the PD or even online (if, for some reason, the PD cannot be trusted)?