We just activated a new feature for use on all our posts. Below the comment area you will see a check box where is says Notify me when follow-up comments are posted on this article. If you check the box you will receive a verification email to complete the process, and then you will receive email when somebody else comments.
Remember, when you receive an email you click the title at the top to see the original post on the site. The comment box is at the bottom.