Thread:Semanticdrifter/@comment-4396928-20130117000949/@comment-4811793-20130121235416

Well, if the content was originally copied from another source then it qualifies as a derivative work of the copied content. Even if it was no longer a word-for-word match, the fact that it had originally been imported wholesale means that you have to attribute the original authors to satisfy the CC-BY-SA license. The only time you don;t have to attribute someone is when the content is original.