The new feature (that is now available for you to test drive) is an option to receive an email notifying you that someone has replied to your comment. It shows the text of your comment, who replied and what their reply was.
To activate this feature on a comment, click the check box at the bottom of the “Leave Your Comment” box which is titled, “Notify me of follow-up comments via e-mail” before you click the Submit button.
BTW, we are simultaneously testing on the technical side to make sure it doesn’t cause any issues. If it does, even though it may be popular, we will have to go back to the drawing board.
So, please try it out first for a while then we invite you to return to this post and participate in the poll below to help us figure out if we should keep this feature and if so, how best to configure it. Thanks!!!