When my school started to offer friendly email address (as opposed to unfriendly uXXXXXXX@nus.edu.sg) you could only sign up for addresses using a combination of your initials and your name. Smartass that I am, I signed up for a@nus.edu.sg.

It's a college, and long story short seems like every few months somebody testing out the new shopping cart or mail server they made, sends me test emails. I've had credit card information more than once. I reply and tell whoever it is that I'm getting the emails, and it stops.

It's a good way to liven up an inbox that usually only gets circulars and spam.