I don't comment on blogs much. And when I do I almost always fail to follow up and see if there was a response. The main reason for this is that I use an aggregator to track blogs and changes to them. I do not know of an aggregator that tracks comment additions.

My thought this afternoon was that it would be really nifty if there was a mechanism like trackback pinging that would notify people of responses etc. to comments left at blogs, and in somecases across blogs.

For those who don't know a trackback is a method supported by some blogs that allows a blogger to create an entry that "pings" back to the original blog with an abstract that appears as a comment. This gets part of the way there for what I was thinking.

My idea would be to have some mechanism that once there was some linking via comments/trackbacks etc in blogs there would be a way to view the entire discussion.

So for instance a blogger blogs. People comment. Other's trackback. People comment on the blogs that have tracked back, and so on. Add to this sites like reddit.com, digg, slashdot etc. Now there is an entire discussion that has, or is, taking place out there that is disjointed. My idea would be to provide a mechanism whereby that discussion could be presented in one place.

I realize that actually creating something like that would be of a scope so massive that it really isn't possible but still it would be cool.

I also know that the end result of this would be flamewars of ridiculous proportions. But this could be the next Web 2.0™ Übersite.