Just because I do not provide graphic pieces to be judged doesn't mean that I don't contribute.
And for the record, I did not say that "sucks" is constructive criticism.
But if someone says "blahdiblah sucks BECAUSE..." then it is. Then you can use the info on what sucks to improve. "Sucks because the colors clash" let you know that the colors clash, so you should try something different. "Sucks because the center of interest is in the center of the page" lets you know what to fix- the composition, and why it's off.
And in case you haven't noticed, this isn't a museum of a graphics site. This is Chat-Avenue.com. It's for fun. It should be useful, but fun.