By leaving a comment, we are indeed leaving our name and a message. This is not a small thing. Commenters are like content producers who doesnt have any rights on their contents... not good. I think people should own the control on their comments. That's why using external comment systems where users have access to all their comments on any blog and can do what they want with it it like deletion, editing, backup, change pseudo, infos and avatar, etc (disqus, discourse...) is better than any platform native comments, regardng the right to be forgotten or at least the right to control our own data. A comment is not a gift, it is juste someone who want to leave you a public message. I think discussions are unbalanced if one interlocutor is the exclusive owner ad vitam eternam of all the other people messages. Of course, the choice of the comment service has to be done carefully as it can also have its own privacy flows (unanonymous ads... etc) Good aspects of externalizing the comment system is that you dont lose time managing others comments and users may be more enclined to leave to a comment as they know they still have rights on it. Privacy anf right to be forgotten are major problem of the 2.0 era. It has to be handle seriously.