If artwork here should be judged, then why not use a +/- 5 rating system and use that to keep score. Then not only could there be a top 20, but a bottom 20 as well. It seems wrong, but curiousity would definitely get people (I know I would) to look at just how bad something must be to get the most -5 votes. Negative scoring could also balance out anything positive and vice versa, so the rating would probably be more fair.

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Barbequed Pixels?

Your friendly neighborhood Wings3D nut.
Also feel free to browse my freebies at ShareCG.
There might be something worth downloading.