[thr0wawayf00]

This makes sense. Unfortunately, the cynic in me thinks that even if this is technically feasible (i.e. the software could be designed to facilitate healthier discourse), the reality is that the money would never allow it to happen as you rightly point out. So given that, is it actually possible? I don't think so.

[tbrownaw]

I have a ton of blogs in my rss feeds. Occasionally one will have a response to something a different one published a couple days or weeks previously, and sometimes they'll even go back and forth a few times.

Sometimes some of the ones with guest writers will host a similar kind of exchange all in one place.