GitHub user sends notification to 400k users
We use slack internally where I work. There is a somewhat unwritten rule that you should not use @here or equivalent as a general user.  There are a few cases where it's ok to if you really have something for everyone in the channel ( Aka don't run this it's broken type stuff ...) so some channels leave @here enabled. Still, I go From mildly amused to feeling sorry for the unsuspecting newbie who didn't look at the size of the channel and think: Do 4k people really need to hear about my problem?