Because people frequently post comments on some of my blog posts asking for help with something the post was talking about, I've added a new feature! You can subscribe to future comments on a blog post now. When adding a comment, there is a new optional e-mail address field, and a checkbox to subscribe to future replies on that comment thread. So you can get an instant update whenever I (or anyone else) posts a comment on that page. All the notification e-mails contain links to unsubscribe your e-mail from the mailing list, and if you want to unsubscribe to all comment threads, there's a way to do that too.