Idea: Send comments as e-mail plus save it in cookie, so when the commenter reads the comments he sees his/her comment. Then a moderator or blog owner hooks his CMS or static site generator into the e-mail program/service and he/she can also reply to comments by replying to the e-mail! Or delete the comment by deleting the e-mail. He/she could use a dedicated e-mail box like comments@yourdomain.com. It would even work without JavaScript (form action mailto)! And no server required except a e-mail service.