The new feature for our site. I added support for comments subscription. Now you can (both anonymous as well as registered users) subscribe to comments of given node.
When users, either anonymous or registered, post a comment, they can subscribe to comments follow-ups. Notifications will have a teaser of the node and a link to the comment. Notifications will also have links that will allow the user to unsubscribe.
To subscribe you have to enter a valid email address and activate check box "Notify me of follow-up comments posted here."
I hope that it will help you to stay up to date with the last comments posted on this site. If you have any problems with this service just let me know. Thanks!