I appreciate any and all comments and especially invite CRITICISM.  If you have a question, I will answer it.
I'm glad you read my comment on YOUR work, but these generic "Thank You!" replies to my comments are just ANNOYING!  (yay, feedback!  oh, another  "thanks for your feedback"). 
Clearly you don't have time to comment on my work, which I can understand, but then why are you wasting your precious little time writing "thank you" fifty times a day?  It's just not necessary.
Politeness is highly overrated!  Thanks for understanding.