Are FREE games on your phone costing you money?

Feed(s): 

Thanks to some tricky in-app purchases, some kids are running up HUGE bills while playing supposedly free iPhone and iPad games.  Games like Angry Birds and Zombie Takeover are free to download, BUT pop-up messages during gameplay offer upgrades for a fee.  Any purchases are automatically charged to the account holder's credit card.  One mom learned this the hard way after her six-year-old son charged more than a thousand bucks playing a game on her iPad!  If your game app requires a password to make purchases, now is the time to set it up to keep your budget intact!