Is this the holy grail that Amy Garhan has been looking for?
Well, the short answer is that it is still in beta, so we won't know for awhile. But Robert says its cool, so…
Right now I have been using Amy's suggestion to tag every comment I make in del.icio.us. It works, but is still a little bit click-happy. You can check out my current method here.
(Update: Invite codes were posted to Robert's post in comments today, and I got one somehow, though it was WAY after they were posted. You will see some of what this thing does here on my page starting Monday, check back. Very cool.)