Our team chose it and I was pretty on the fence because wikis have existed for more than a decade and I had always considered the problem solved.

However, engineers like using it and that is invaluable. I can't explain it, I guess cause it 'feels' 'new.' It is pretty fun to use on a Mac, and the results are aesthetically pleasing. I understand there are some pretty sophisticated things you can do with the API, and we are already talking about tying it to PRs to make release notes.

Pretty promising all-in-all, but I wouldn't have picked it over and established wiki solution.