On this issue i believe the message sent is quite enough to pass the message "A reply of yours, quoted below, was deleted by a Bitcoin Forum moderator. Posts are most frequently deleted because they are off-topic, though they can also be deleted for other reasons. In the future, please avoid posting things that need to be deleted." I guess any sensible individual after receiving this message needs to cross check the deleted reply to avoid such mistakes in future. The moderators are mostly seen as volunteers so lets not over work them (by asking for a specific reason each time a post is deleted) as there's is 90% chance they're right when a post is been deleted.