I track my comments by revisiting the site again and again and again.  CoComments is a way to track comments on a blog without constantly revisiting the site.  In fact, it keeps up with all the comments you leave (very helpful for client tracking).
While the initial discussion on CoComments was interesting to me:
From Robert Scoble [...]

Since the Stone Creek Coffee interview, I’ve been hoping to see another blogger interview by Easton.
He’s got a good idea of how to ask the right questions, like this one:
Easton: Why did Earthlink decide to create the Earthling blog?
Dave: They wanted to expand what they had started with the Protection Blog, both in [...]

It’s vital to ensure that you integrate RSS into your entire marketing mix – don’t forget offline marketing strategies should include mention of your company’s RSS feeds and fresh content.
Send out leaflets advertising your RSS feeds with each product you send to your customers. Include a story on RSS in your newsletter.
Develop a media campaign [...]

Mention RSS, and the people who’ve heard of Really Simple Syndication automatically think "blog". That’s unfortunate, because you can use RSS in many more ways to develop a coherent marketing and branding strategy than merely blogging.
Think beyond PR and spin, although you should be alert to harmful mentions of your company ANYWHERE and react immediately, [...]

While RSS does provide a number of benefits when used for each individual marketing function, best results are achieved when it is fully integrated in your internet marketing strategy. In more simpler terms — when you use it to power most of your marketing online.
The key point is that RSS makes various marketing functions work [...]

Getting your content delivered to end-users is the first requirement for communicating with them, selling to them and building lasting relationships with them. If your content is not getting delivered, as is often the case with e-mail, a large part of your internet publishing efforts is wasted.
Direct marketing, direct selling, relationship marketing, public relations [...]