The publisher of the popular “The Smurfs’ Village” game for the iPhone and iPad has added a warning that virtual items such as “Smurfberries” cost real money –  as much as $100 with just two taps on the screen.

An Associated Press story this month revealed how easy it is for kids to buy such virtual items and have them billed to their parents without their knowledge. Like many other free games, “Smurfs’ Village” makes money by selling the virtual goods to advance play. Get the full story »