Comment by gus_massa

It takes a few vouches to unkill a comment. (The exact number is a mystery (I don't remember dang telling the number ever) and it may change from time to time (or not).)

For not-bad comments just vouch them, but for very-good-I-will-not-be-able-to-sleep-until-it-is-unkilled comments vouch and send an email.