Check this out.
A feature which will help you not do something stupid: e-mail people when you have no business e-mailing them. Namely, during/after a prolonged session with some alcohol. Looks like you need to take a little timed quiz, with questions which would take a sober person not too long to solve, but would be difficult for a non-sober person.
Wish this feature existed ~10 years ago.. there were a few I'd like to have gotten back.