Implemented. Sorry to all my commenters who just lost some PageRankÃ¢ï¿½Â¢.
P.S. I've decided this is a potential profit center. I'm going to include a PayPal button on my comments. If you want to have the link to your website not have the nofollow attribute, then you can pay me a buck. Since I have 2471 comments where people have left their URLs, this could turn into a tidy business.
(For the dull of wit, I'm kidding).