Eugeen Eric Kim : PhilJones almost stumbled onto something quite profound in his commentary last May, but he couldn't quite put his finger on it, and Chris and I consequently jumped all over him. We were right, of course, but Phil was onto something.
Well, I don't entirely see the difference between Kim's Here's where it gets cute. Doing this feels like tagging. You're just tagging granular content instead of documents... which is what PurpleNumbers are designed to enable in the first place.
and Dent's labels posing (miserably) as identifiers.