I recently asked a question on SO, and a given answer was not useful. I downvoted the answer, and left a comment as to why it was not useful. I got a comment in return something of the likes of "thanks for the downvote, that really urges me to help you..."
Does being the ASKER make it bad ettiquette to downvote someone who is helping me, or is it right to downvote, leave clarification, give the chance to edit and redeem the downvote, potentially changing it into an upvote?