Parents of teens already dread getting their monthly cell phone bill, and it could get even worse. The reason comes from an unlikely source: soda pop.

In the coming weeks, Coca-Cola will bring “Sprite Yard” to the U.S. market, a social-networking site that targets cell-phone-toting teens (is that redundant?), with such features as personal profiles, photo sharing and online chat, according to the New York Times.

Jonathan Sackett, the head digital officer at Arnold Worldwide, makes this observation in the report: “Coke could see trouble if teenagers run up high data charges on their phones using Sprite Yard.”