Kristine Kathryn Rusch makes a point I know has been made on these forums in the past. It gets to the heart of what is wrong (and destructive) about critiques, and something we should guard against (which can be done while still recognizing the many positives associated with critique):
Business Musings: Serious Writer Voice ? Kristine Kathryn Rusch
Business Musings: Serious Writer Voice ? Kristine Kathryn Rusch