if the comment comes from someone i know is good and better than me i may take note and do better. many time I know a person is on a ego trip too. and will do this. Or it someone with another account name that will come in and do this too. I look at the other artist work to see what what. I not worry about the comment. he may be right or maybe wrong. I may even ask some people I know by IM to tell me if what the comment is true or not. they tell me. Many times they tell me they know the person and do not take note of that person[on a ego trip]
just my thoughts.

what you see is not what you know; it in your face