This morning I changed line 148 in the /wp-includes/comment-template.php removing the rel=nofollow tag.
This comes from a desire to let people who contribute thoughtful comments at my site to get some love back from me. The decision is also partly due to the great filtering that Askimet does sniffing out blatent spam.
I am a fan of sculpting your own site using nofollow, but why not pass along the small amount of link juice that their comment will drain. We all drink from the same watering hole.
Before the latest WordPress update you needed to add a plugin to use the nofollow attribute, but now it is a core feature. I understand the logic behind that change, but I think in the future it should be an option, not hardcoded.
I urge anyone else who wants to join the dofollow crusade to join us, by updating your core code like I did.
Let the commenting begin!