i would find this annoying. Sure it depends on how exactly you use slack, but when i am in a channel i am there because it is relevant to my interests/tasks and

i would find this annoying. Sure it depends on how exactly you use slack, but when i am in a channel i am there because it is relevant to my interests/tasks and when i get a new message i expect it to be relevant as well. Having unrelated messages popup would be the real time waster, because i still have to parse them to make sure they are not again relevant to me. We've used "task force" channels tho for specific problems that got semi open discussed in documented in these channels.