PwnedList, is a service that notifies you if it discovers your email in the hacker soup it’s constantly monitoring. All you have to do is enter your email address, though if even that makes you uncomfortable, just sign up with a securely SHA-512-hashed version of your address (which the site explains and shows you how to create). Be sure to verify your email account by clicking on the link in the email they send.
I just signed up for my free account. Good News! My email account was free and clear. YAY! My account is verified and I’m waiting on my first report. See my account below: