I have removed the evil nofollow tag from my website allowing my visitors who type comments to actually gain from Search Engine crawling. I wish I had done this sooner, the nofollow tag is evil, you spend all that time commenting on blogs and you do not gain that much page ranking. It is time to fight back and give everyone a fair chance to gain some page ranking.
The information I used to find out about this plugin is here: http://dofollow.info/blog/how-to-make-your-wordpress-or-blogger-blog-dofollow/. This is something that everyone should do. I have good spam prevention now, so the million or so Ipod and Viagra spammers will not gain Page Ranking.