Follow My Links is a very simple plugin that prevents WordPress from automaticaly adding a "rel=nofollow" attribute to the following two categories of authorial links:
- links in the post author's comments;
- links to the post author's URL (usually linked to from the comment author's username).
Plugin home page: http://www.everfluxx.com/follow-my-links/
Follow My Links is my first WordPress plugin. Feedback welcome! :)