$1,914 spent on Facebook's Farmville game

This is how a "free game" turn to a near $2000 bill.
Let's be realistic, how many business will setup sites to allow you to play game for free? There will be way to "monetize the game". It's business.

A mother from the United Kingdom saw just how addictive this game can be when she opened her credit card statement to see a £900 bill ($1,914) from charges incurred playing the Facebook game.

It turned out that her 12-year-old son had racked up the charges - purchasing in-game "Farm Coins and Cash" using real plastic. The virtual money can be used to purchase buildings and upgrades within the Farmville game.

... read more at http://www.digitalone.com.sg/news/article/11141/1