Tank,
Since you closed the thread you posted I`ll ask in a separate thread.
Your Clause #6 prohibits sales announcements. Does this apply also to help intended notices of say an ebay auction for an engine or part that the participants in the particular thread might appreciate knowing about that is not anything to do with the person posting the `discovered this sale` tip? Personally I think losing that ability would be harmful, not helpful.
I agree if a member wants to offer goods for sale that should go in the special forum intended for such activity.