I think this deserves to be pondered. BBC News is moving away from merely hosting comments to inciting discussion in a variety of formats and locations. From Reportr.net:
For the US presidential debates, it [the BBC] has opened channels on video services Qik, 12Seconds and Phreadz. Some of the videos were subsequently edited and posted on the BBC News website.
The purpose, explains [BBC Editor] Matthew Eltringham, is “to join in conversations wherever they were happening rather than expect people to come to us and host them on the BBC’s platforms.”
This is a major change in the BBC’s approach to user-generated content. It signals a shift away from the idea that the BBC should host the conversation. [Link added]