Are there any honest people on Craigslist?

I swear, every time I put something on there to sell (usually lenses and accessories), I get one contestant after the next for America's dumbest criminal. It's just amazing the amount of offshore engineers, Peace Corp. workers, and folks currently out of town 'for a long while' that want to deposit money in Paypal and have me mail them my item. The worst is they all think they are original and clever, meanwhile they couldn't send up more red flags than a Russian army with the script they send out. Sometimes I string them along for a bit of fun, just to waste even the smallest bit of their time. It just sucks that people are this pathetic.