well it is true it souns sometime a bit too polite to be true :( but i had a handful of comment that pointed me at some shortcomings i could learn to improve so. for me the only use i make of comment is when i have a comment, i visit the gallery (if any) of the person who left me a comment, and watch his work (or her work) and usually i find out that most of them have something in their art that appeal me and that i would like to be able to achieve as good as them, so i begin to talk with them starting from that...