Because we have chosen not to list redirects, so suggesting a redirect makes more work for us and slows down listing.
It's our site, we dont tell you what to put on your site, you can't tell us what to put on ours. Argueing about whether redirects are good or bad will not change anything, accept thats what we do and move on. Note this also applies to framed redirects, cloaking, or any other form of disguising the actual place the files are served from.
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