Rumor has it the next target is Authorize.net (I assume not because anything they did but because that's how you actually take down the ability for Visa and MC to function). That would be quite dramatic to say the least.
Can you substantiate that rumor? Taking down Visa.com isn't really a huge deal, but taking down Authorize.net would actually affect a lot of merchants.
I wonder why they don't get payment gateway IP's from shops, surely some of them work in them, and DDOS those. Maybe too much heat because Visa and MasterCard would lose millions per day and people would lose the ability to pay with their cards?