They’re Slacking about me. I just know it. Slack, a “corporate messaging app” currently valued at $2.8 billion, apparently allows employees to easily set up “private groups, which require an invitation to join and are hidden even from administrators.” This sort of cabal cabal would be poisonous in, oh, approximately 100% of the places I’ve ever worked. Managing editors would be especially endangered. (And I would almost certainly not be cool enough to be in Amanda Hess’s group.) …