A man from Pennsylvania has filed a lawsuit against Apple for what he considers to be the "unlawful exploitation of children". The charge relates directly to the ability of minors younger than the age of 13 being able to purchase Game Currency.
Garen Megurian, the man filing the lawsuit, claims that minors can easily make purchases on their parents' accounts. The suit states: "Minors 13 and older are permitted to open their own Apple accounts, and minors younger than 13 may purchase Game Currency by using their parents' general Apple password (no special Apple password is required to purchase Game Currency)."
Meguerian's daughter managed to rack up $200 worth of in-app purchases, all while he was completely unaware the games his daughter was playing even contained such a feature.
Source: PC Magazine