Are my works so in-attractive??

Sometimes I doubt DA about whether it has shown my new submissions on the 'newest' column. Or are my works so bad? It's very discouraging that submitting works with nobody notice.

I don't mind others don't like my work, but at least, give it a glance, throw a comment. Otherwise, how can one knows his weakness, how can one improve? And what's the meaning of having this site? Sometimes I'll find it strange that there are tons of positive comments on those fairly good works. But are those works really so perfect? If there aren't any negative comments, how can everyone here be improved? How can ideas be shared, communicated?