> This is an incredible power. The power to effectively drain the bank account of every customer who has ever done business with you.

And in the case of EA/Mythic Entertainment / Warhammer Online, this has happened last year http://ireport.cnn.com/docs/DOC-430817

(billing past and present customers multiple times, sometimes incurring huge overdraft fees and leaving some stranded without access to money over a weekend as the banks would block their debit cards)