Are You on the Pwnedlist? — Krebs on Security
http://krebsonsecurity.com/2011/11/are-you-on-the-pwnedlist/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+KrebsOnSecurity+%28Krebs+on+Security%29 -- Shared with Google Share Button
Krebs on Security talks about how to find out if your email address is one that hacker's may have compromised.