Basically, a community wiki is used for questions that don't have a specific answer, or are combining the ideas of the community.

A question can be made community wiki either by:

• being marked as such by original poster
• editing (enough edits to a post and it becomes a CW)
• being marked as such by a moderator

Generally any question asking for a list of answers should be marked as community wiki, since there is no correct answer. Also, and question that asks for multiple answers (such as a favorite X).

Basically, a community wiki is used for questions that don't have a specific answer, or are combining the ideas of the community.

A question can be made community wiki either by:

• being marked as such by original poster
• editing (enough edits to a post and it becomes a CW)
• being marked as such by a moderator

Generally any question asking for a list of answers should be marked as community wiki, since there is no correct answer. Also, and question that asks for multiple answers (such as a favorite X).