Because he is looking out for my data. I attended Alex’s session on “attention” at MindCamp. I will send you off to his blog to read more about the concept of attention. It is a meme I’ve been keeping on the radar, and I think is about to become important. I doubt that Web sites will interoperate to exchange attention data. However, I do sense that the users of social applications will begin to want their data back.
As Alex hit on, my tags and preferences make up my online identity. Not to mention a large accumulation of effort. Applying an OPML file as a filter on sites like Findory and Megite amounts to portable personalization. Hearing Alex talk to Dave Winer, I had a vision for a new tag/OPML service, which I will elaborate on soon.