If you visit many blogs regularly and post your comments there, you will agree it is a pain in the ass to track the responses to your comments individually. coComment allows you to track comments from all blogs in one place. This service allows you to do the following 3 things:

Capture comments: coComments will keep a copy of your message in one place with links to the original site in the form of conversations.
Share comments: All comments are stored on one page and can be displayed and shared by users on your blog so that they can see where you’ve been commenting lately.
Comment Alerts: Whether you’re commenting on a blog or just following a blog-based conversation of interest, coComment will update what’s been added to a particular discussion in real time.

This service is going to be VERY popular with bloggers. Problem is it?s in a closed beta right now.

Via Scoblelizer