Hi cullinan
Assuming Trustrank is important.
A listing in dmoz.org gives you a link in directory.google.com
I don't think there is a domain which google trusts more than google.com
So, dmoz makes a significant difference.
Also, I've noticed that the correct link in Y! makes a big difference. In my travel related sites, competitors with old links in Y! directory are hard to beat in Google.
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