We were talking about the hacks at Sony in general not just this one.
Over on gaf they have a lot more info about it then this thread. Some are saying that people who downloaded the details have been able to gain access to facebook accounts because people use the same passwords for lot's of places they visit. I think the big question here is why did they have the details stored on the server? What were they for? Some speculate that it could be connected to regestering a product or purchasing something from the Sony store. Either way while credit cards were not stolen this time name/address/dob/password was. Which to hackers is a lot of information to use to screw you over.
I dont see anywhere on the sonypictures website where i can register my name. also according to the screen shot the most used city is from a town with a population of 3,000 and the most used birthdates are 70-80 years old