Has community wiki checkbox disappeared? I cannot find how to make a post a community wiki.
Basically, it was felt that the CW check box was encouraging some abusive behavior. It is still possible for a post to be converted to CW by moderators, and to enter it as a consequence of multiple edits.
This isn't exactly an answer to this question, but a response to some of the concerns in the comments. I just posted a question on meta.stackoverflow asking whether we may receive notice in advance of such changes, so that we may weigh in before they occur.