I loved your thoughtful article. I would add another thing that annoys me on the boards:
--Always be explicit in the subject line (so others can tell whether to even pursue reading the post).
A hearty AMEN to your comment "If you don't have something valuable to say, say nothing." I have wasted so much time following up on a thread that interests me (because I got an email that said there was a new post) only to discover it was just someone saying 'atta boy' or worse, talking about getting a pizza and coke.