When I saw/heard some young lad on the back of the bus,telling his 3 mates to take thier socks off,because then,you get more money,(you know the type,sitting on the floor,staring into an empty plastic cup!) I decided not to give money to anyone on the street,ever again! Now, I choose who gets my money,from home,and tell anyone who accosts me for money, to whistle!(or something like that)