Before sending replies, please take a moment to excise any prior message content that follows your content. In-line quotes, citations, and references to previous messages are fine and encouraged. Your email application's intrinsic M,ssage threading should be more than adequate for your message's place in a discussion's chronology.
Top posts are legitimate when you are forking a new thread from an existing one. That is when you edit a message's subject so that it because the first post of a new discussion.
Thanks