I ran into one of these guys today trying to sell me a "SUPER HIGH END" stereo system up near cumberland mall today. The guys' story was exactly as follows:

http://plus5forsobriety.blogspot.com/

They were driving a white Yukon. The guys were actually very convincing. When I declined they began to give me a story about his newborn child and how he needed money. These guys are scumbags. If it seems too good to be true, It usually is. Watch out for these guys. Don't get suckered in.