Its now possible for commentors to track a comments thread via email. You will notice that i've added a subscribe/unsubscribe option at the end of each comment page. If you wish to be notified whenever a new comment is made on that particular posting, select "Subscribe". If you wish to unsubscribe, select "Unsubscribe". You also have access to a subscription manager from which you can unsubscribe from multiple postings at the same time.
New functionality for the VOI
All emails used to allow for comment subscriptions are placed in a password-protected directory to protect against "spambots":http://diveintomark.org/archives/2003/02/26/how_to_block_spambots_ban_spybots_and_tell_unwanted_robots_to_go_to_hell.html. They will never be shared with any third-party. Thanks to "Scriptygoddess":http://www.scriptygoddess.com/archives/000982.php for the great script.