zlacker

>>ry8806+(OP)
Mailing lists are still the superior format.

The barrier to entry is a feature and not a bug.

>>noosph+g7
Mailing lists work for something like an open source project where you have an ongoing relationship with the community.

They are not suitable for one-off comments on a blog post. In particular, I'm not even sure how you could make it possible for a normal user using a standard mail client to reply to a comment that was posted before they came across the blog post.