I 'd like to tell you a few things about comments and remind you (and myself) why are some of us here in this website. I came into this website to get some opinions from other artist on the positives and negatives of my drawing as well as suggestions for improvement, knowing that my abilities are still quite far from good. You have to let the other person know if something is wrong with what he/she has made... of course mention the good side, but don't forget about the down side of a piece of art.
Don't be afraid to be honest and say that something is wrong with something, people aren't that sensitive(and those who are here are fully aware of the fact that they may hear a negative comment sooner or later). Comments such as "wow", "cool", "Sucks!", "me like" or "boo!" just won't do...
I understand that at some point we 're all either too tired or just not in the mood to write a proper comment, so we just throw one such as the above. To be honest I do that too(though I know it's not quite right), I don't say that every comment should be full of useful information, but please give it a try.

Thank you.