Passwords are like underwear. You shouldn't leave them out where people can see them. You should change them regularly. And you shouldn't loan them out to strangers.
♫ ♫ My pokemon brings all the nerds to the yard, and they're like you wanna trade cards?♫ ♫ Darn right, I wanna trade cards, I'll trade this but not my charizard... ♫ ♫