I've been recently interested in tracking other people's blog posts where I may have left comments, or posts I simply wanted to track. After sitting on it a bit it seems obvious that a web monitoring application would fit the bill quite nicely. After some investigation into both web- and client-based options, I went with WebMon (a freeware application) and it seems to work great in receiving notification of new blog post comments. More info and screenshot pics on a personal blog post here.