That's funny because there's a stack overflow for business and it was passed over for slack.

Another thing is -- the public stack overflow is really nice for reference, but in my experience I don't like the culture around it. It isn't inclusive. The thing that turned me off was when they would shut down a question because it would lead to extended discussion.

Now slack allows extended discussion - properly off in a thread - and through that fosters a corporate culture in a good way.