NOW THIS ARTICLE IN SALON has what sounds like an interesting blog-related app:

Punch up a URL and if Jason, or Andrew Sullivan, or Sopsy has an opinion about that page, you see their comments in a floating window alongside your main browser window. It’s a simple enough trick: Sites like Blogdex are already tracking blog-borne references to different URLs. All your browser would have to do is send an additional request to a database of blogged URLs anytime you pulled up a page: If there’s a match — if one of the bloggers you’re following has referenced the URL — their comments get sent back to your machine and appear in the floating palette.

I’d pay for something like that. Is this what Bennett has in mind? It doesn’t sound the same, but he’s been sufficiently coy that I can’t be sure.