I've been out there awhile but I just discovered this when SEOFirefox was activated when I upgraded to FF3. I hope it will be new and helpful to some of you. When you land on a page with SEOFirefox active, links with nofollow show up in red. No red in comment links = lack of nofollow tag = great place to concentrate making comments. NO SPAM. I'm going to start spending some time each day adding blogs without nofollow tags in my own blog.