I use Google Reader as my aggrigator, so I simply “star” posts that I want to keep up with the comments on, then check them out later to see if there has been any response. Though, I too wish there was an easier way.

If there was a way to perhaps add a note on the title of a post when there’s new unread comments saying something like “new comments,” that would be helpful.

I have no idea how (or if) that could be done though.