[alf]

It is an easy scam to pull off and one i have witnessed myself. I used to work part time for the University of Washington Parking Control. Free parking on Sundays but you'd often find a street guy standing by the booth selling parking stubs for $5 each to unspecting visitors on busy Sundays. He'd probably pull in a couple of hundred before the cops get around to chasing him down...till next Sunday at another booth. Hey he is just selling stubs and a friendly greeting for $5 and did not say it is for parking.