For use with Blogger blogs.
You need to install a firefox extension and/or add a small piece of code to your template.
This is a service that will turn any comments page on blogger into an RSS feed, you can link to it from the blog posts pages any user can subscribe, you can also install a greasemonkey script that will give you a subscribe link on everyone elses blogs.
Instructions on homepage
Sites Using This HackEdit
Edit this area and add your own link if you are using this hack.