I noticed that one of my answers on superuser had been edited by the community user. Looking at the history it just says "[made Community Wiki]". I'm left wondering why because it hasn't been edited and there are other answers to that question left before mine that haven't been turned to CW.
If the Community user always left a reason why a question had been changed to community wiki people wouldn't have to ask.
Update: it's been speculated that it was Community Wiki because the question was community wiki, which I accept, but if that was the case, and it was created initially as community wiki then why was I notified on my recent activity page that there had been an edit?