Bam Bam, you are looking at it the wrong way.
-People use the same password for their myspace and the email connected to their myspace usually
-When their myspace gets hacked, they only change the myspace password
Soooooooooooooooooooooooooooooo
Write a script using CURL that checks to see which passwords still work with the emails... THen:
-Forgot Password on myspace
-Forgot password on bank account
-Forgot password on any other account connected to the email.
or just scrape all the emails and start sending them ringtone offers and stuff.