Meta Stack Exchange is where users like you discuss bugs, features, and support issues that affect the software powering all 158 Stack Exchange communities.

What is meta?
Here's how it works:
  1. Any Stack Exchange user can ask a question
  2. The community provides support, votes on ideas, and reports bugs
  3. Your voice helps shape the way Stack Exchange operates

I'm curious as to why some answers show up as community wiki even though the question they're in response to is not marked as a community wiki?

share|improve this question
up vote 7 down vote accepted

The answerer likely checked the community wiki checkbox when composing or editing their answer:

Community wiki checkbox

Generally you can find out when a post was made community wiki by viewing its history. For example, this answer was created a community wiki answer, per the first history item at the bottom of the page.

Note that it's also possible for posts to turn into community wikis due to multiple edits, per the criteria listed on the community wiki FAQ entry. This is applicable for both questions and answers.

Since it's at the answerer's discretion whether or not to make their answer community wiki, it's hard to say why people may do it in every case. However, there are various reasons why this option is made available.

share|improve this answer

Are you asking how or why? Assuming the former, answers can be marked as community wiki even if the question isn't marked as such. In fact, only answers can be marked as CW by the poster; one must ask a moderator to mark a question as CW (both questions and answers can "age" into CW, as Tim Stone describes in his answer).

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .