I was doing my good SO citizen work this morning (revising answers to my questions and accepting them) whilst I noticed that my rep doesn't get increased with the usual +2 on each accepted answer.
Edit: the question wasn't "Community Wiki".
Edit: the answer accepted wasn't mine in this instance.
Example: I just accepted Access to widget in GTK+ and no +2 rep.
Edit: no mention of the "accept" transaction appears on my "envelope" page.
Resolution: the answer provided to the question was marked "Community Wiki" and thus no rep is awarded for accepting one of those.