Interesting posting from Jon Udell today ("Bloggers talk to bloggers, scientists talk to scientists") in which he draws attention to the disconnects between discourse happening in blogs and mainstream media, and that happening in scientific journals, even when the conversation is about the same article.
The comment and the subsequent discussion is worth reading. There's an interesting comment Geoff Bilder about CrossRef's forthcoming blog engine plugin; keep an eye on CrossTech for a formal announcement.
The BPR3 project is also making practical steps towards helping link up discussions in these two domains.
I've been arguing for a long time that publishers need to keep an eye what's happening in the blogging arena, as its a good test bed for exploring the transformation of discourse (scholarly or otherwise) that the Web enables.