User blog comment:Dopp/Communicate Easily with Message Wall/@comment-13301-20110926192408

If comments are editable, what about history of the changes?

If only admins can delete comments, what about spam that until now anyone could delete?

If other users are able to edit comments, what about users removing warnings placed by other sysops about their behavior?

This method is utterly retarded, and thus must be optional.