Hm, not quite what I had in mind. Slack is more of an instant messaging service akin to IRC or Jabber (except that unlike those, it’s not based on an open standard, so you’re forced to use the proprietary client software).
I’m thinking more of things like this enterprise version of Google+, which behave more like Facebook. The ones I’ve seen appear to have evolved from wikis, but with a bunch of “social” features glommed on. Because apparently someone decided it would be nice if I could share status updates with my coworkers in a Facebook-style timeline, or ‘like’ people’s comments on internal wiki pages…
