If you'd like to send us some congratulations on the site, ask a question, or just generally tell us how awesome we are, here are the Four Founders' usernames. Attach them to @waste-of-time-and-money.com and you're good to go. Remember that all users can be emailed in this way.
If you spam us, you will be blocked. If you complain to one of these addresses, you will be blocked. If you send us a picture of yourself, it's a grey area. Trust us. Sending mail like this to us is about as useful as telling a bloodthirsty panda that it's being stupid.
Also, here are some other emails that you might find useful:
For deleting a user account: usercontrol (put 'account deletion' somewhere in the subject for best results)
For submitting ideas for surveys manually: encuesta