I think we should freely make comments as long as it's in good faith. The risk is that someone who is sending us heart-warming pictures might feel discouraged. May be we can make the comments on another thread without linking to anyone. Long back, I had an accident which could have been avoided if had recieved a tip from an experienced pilot. But we did not have such easy communication facilities as we have now. How about someone starting a thread, "I learnt from that"