Imagine you’re like me, and you like WordPress so much that you write plugins for it. People start writing about these plugins and they, of course, link to you. You see these pages writing about you show up in your referrer stats and of course you go and have a look at what they’re writing about your plugins. Imagine my surprise when I see the links in the post being nofollowed… These links have been editorially reviewed, why would anyone want to nofollow those?
Nofollow was meant to combat comment spam. It failed miserably at that, but it was designed with the intent of preventing link-juice flowing to links that had not been editorially reviewed, and thus prevent you from linking to spammy sites. If people start using them within blogposts, where’s the end? SEO wise, there’s no use. You’re linking to content relevant to the topic at hand, thus increasing the value of the post for both the search engine and the user. So please, don’t use nofollow for editorially reviewed links. Ever.
Update: Markus has replied in the comments and has removed the nofollow, kudos to you pal!