Rodney - 5:58 pm on Aug 23, 2010 (gmt 0)
A few months ago, someone in Europe stole my credit card number and "tested" it on iTunes.
I'm not sure if that's related to the story above, but fraudsters "testing" card numbers is not just an "iTunes" problem.
I've been working in ecommerce for 10+ years and fraudsters will "test" cards with 100's of different companies ranging from digital goods, online services (like RPG gaming sites) to sites selling physical products.
Some companies are definitely more responsive than others when trying to get the mess cleaned up.