I have to admit that I don't know much about the Community Wiki concept. I thought it would denote questions that were either particularly interesting, or which by their own nature would attract a lot of useful answers/references, as opposed to a single "right" answer. User whuber has made my recent post
a Community Wiki post and put it on hold. I'm a little confused here - how can the same post be eligible for closure and at the same time be "worth" of the Community Wiki tag? Of course I asked directly whuber, but I wonder if my confusion underlines a fundamental misunderstanding on my part of the Community Wiki attribute.