Round two.

Explain to people that CnC doesn't stand for Crush and Criticize but Comment and Criticize. People like criticizing other peoples posts but they never really comment on what they did right. The response from the OP is always "I meant to do that" or "I know" although he/she asked for CnC, they get butt-hurt and leave the website insulting everything about the site as they apply ointment on the burn in hopes of getting some self esteem back.