I try to comment on the pics of others and when I do I offer help or I just say what I think of the pic. I always follow the rule that if I can't say something nice or helpful, then I say nothing at all. I always value getting the comments of others as well. Irf someone offers me assistance to make something better or improve my overall work, I accept it gladly. If someone says something dripping of intelligence like "that sucks" then I know he's just an asshole and not worthy of my time or attention.