[miclason]

Thanks to all. Tree, I live in El Salvador, we have a choice of 4 cell phone companies, the one I switched to will keep your number active for up to a year even if you don't recharge (you can still receive calls, as "caller is the payer")...their cards do not expire, while the other companies offer pre-paid cards that expire after 30 days, which means that, if I buy a $20 card and don't use up all the minutes, I lose them! (this happened to my parents a lot, they were buying $12 cards, which are only valid for 15 days!)...robbers!