Some good blog optimization tips here:
http://searchengineland.com/070823-082758.php
This following tip amused me somewhat. A side-effect to Google's stupid no-follow policy is that webmasters will use it to direct PR. It's a short conceptual leap from this tip to blocking all outbound PR (not something I'm in favor of, but some webmasters do it)
Quote:
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Not using rel=nofollow to strategically direct the flow of link gain. Some internal links aren't very helpful because they have suboptimal anchor text (e.g. "Permalink" and "Comments"). Some external links just leak link gain to nobody's benefit, such as "Digg this" links.
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