And what's worse, the text layout really doesn't fit the graphic design of your site. It was designed perfectly for Newgrounds, and it just looks contrived on your site . Unnatural. Artificial. Not to mention a little too cluttered. That's probably what most people (who aren't complete morons that think that NG should sell people a license to have a Flash Portal on their site) have a problem with on your site.
For example, with Omnipen.net I did start with Newgrounds as a starting point, but I analyzed each and every feature and decided if I needed them or not, and what I wanted that Newgrounds didn't have. Then I designed a layout based on the information I stored and wanted to display. I kept the column style for listing ranks of movies, since it is really efficient, but almost everything else is different. And I even have a few features that Newgrounds doesn't, especially considering the site is based around a different medium, literature.
But I didn't stop there. I participated on my own site and determined whether I really needed some things, or if they got in the way. Comments (kinda like reviews on NG) used to have overall ratings for the piece, for example, but I found that they were too annoying to use each time, and a simple "grade" really didn't add anything to the comment, so I yanked it out. Perhaps this is something you could do with your site. From what I can see, it needs this analysis very badly.
For everyone who thinks that competition is a BAD thing (for some ungodly reason), you can rest easy, because Newgrounds is going to keep on growing simply because it's keeping ahead of the feature curve, innovating left and right. Before Liljim joined, hardly anything got updated on the site, and it was losing its competitive edge to these "copycats," but since Liljim's been on board new features and site tweaks have been coming in quick enough to remain on top.
But try to remember that competition is a good thing. Competition is what is keeping the simple copycat sites struggling to remain above water while Newgrounds can support several employees full time.