Keeping up with the changes and updates on your posts should not be a hassle for your visitors. They could always use your RSS feed to get your latest updates. RSS capability can be used for comments as well. Follow My Blog Post is a handy plugin that saves your visitors time keeping up with the changes that happen to your posts.
This allows your visitors to keep up with your posts without even having to leave a comment. Emails sent to them will include a link back to your post. Posts can be unfollowed easily.The plugin shows how many unique visitors are following your posts. The log section keeps you up to date with what has been happening on your site.
Follow My Blog Posts is simple to implement and saves your visitors time keeping up with post changes. It has customizable settings too. A nice script to add to your site to make it more user friendly.