For some reason, Blogger won't let me comment on this very blog (a win for the cloud!), so I'm answering your comments on the Internet Notebook here.
Gavin, I didn't mention ubiquitous access, because I take that for granted in an internet tool. I was just listing the kind of features that describe the tool's "mental universe".
Craig, you're referring to content-centric networking when you ask for an internet that never forgets? Well, we'll have to make do without that for the moment.