Some people care. And anybody implementing something like the suggested idea here should enable both hosted "preferences" and the capability of just being a hub

Some people care. And anybody implementing something like the suggested idea here should enable both hosted "preferences" and the capability of just being a hub for these same "preferences" hosted in external sites. Here's a solution that is like Gravatar, but for microformatted data in each people's own websites: http://webvatar.com/ http://webvatar.com/