barrywise.com
A Criticism of NoFollow Links: Why You Should Not Use Them
OK, I admit it, I used to be the kind of guy who was tied up with using nofollow links to channel PageRank authority to my blog's self-serving links. But I recently read a blog post over at Blue Jar, and subsequently found a great Wordpress plugin for Nofollow Reciprocity, which opened my eyes to "dofollow" blog links.