We're going to close out this week's round of We Are Media Toolbox fun with commenting.

Have you ever commented on a blog, a picture, or a video? In many online communities, comments are more than just, well, comments -- they're part of a conversation. Comments, and then comments on the comments, often create some of the best discussion on the web. Chris Brogan knows this. Sometimes, he lets his community do his blogging for him, in the comments section.

But comments can also be the Nobu of the online world: where you go to see and be seen. Adding value to a post on a highly trafficked blog can bring you lots of exposure -- so much so that cottage industries are springing up! (My favorite line from that site: "Minimum 3 lines of non spammy comments!")

Of course, participating in all those conversations also means that you have a lot to keep up with, so there are more and more services that allow you to track your comments, like coComment.

So tell us, what commenting tools do you love? Share in the comments (!) or on the wiki.