Forumlar / Cotonti / Core Labs / Ideas / core change for comments (SEO)

Basically, its up to the blogger to decide whether to use nofollow or not. Nofollow is good for unmoderated sites. If you keep an eye on your comments you should motivate your visitors by letting them post direct links to their sites: links to similar sites are not that bad after all. So hardcoding this is no good, there should always be an option.