Source - http://www.maxconsole.net/content.php?45808-PSN-hackers-already-using-stolen-credit-card-dataAn article from the Financial Times strongly implies that the PSN security hackers have already commenced using the stolen credit card data. The respective newspaper, features a case study with a gamer who had a bank call him one day after the PSN hack to query a $900 transaction. However, the respective gamer had no knowledge of the transaction to 'Dr Jay's' online clothing store. The Financial Times previously noted that the 'coincedences can indeed be striking'.
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Source - http://www.guardian.co.uk/technology/blog/2011/apr/29/playstation-network-hackers-credit-cardsThe claims of fraud include the equivalent of $1,500 spent in a German grocery store on an American credit card, and dozens of people reporting charges on items such as German airline tickets and Japanese stores.