Scoble very interesting on Facebook :

First, you’ve gotta realize that in Facebook’s life it will go through at least seven phases. We are moving from phase four to phase five right now. In each phase change people have gotten pissed off

[snip]

Phase 4. All those above+All People (in the social graph).

Phase 5. All those above+People and businesses in the social graph.

Phase 6. All those above+People, businesses, and well-known objects in the social graph.

Phase 7. All people, businesses, objects in the social graph.

Joel on the new CueCat.

Hmmmm ... ok, except that at some point taking photos with a phone is going to be easier than typing in a URL ... if not today, then sometime t in the future. And at that moment, this kind of thing starts to make sense. And actually I´m pretty sure I read about these things already being used in Japan.

Also, bar-codes (2D or otherwise) are still ways of giving ids to things, whose importance is only increasing, even if we eventually move on to RFIDs.