@dredmorbius The challenge will be *finding* people across instances - and knowing which address is the "right" one. It is the issue with email. How do you know which email address to use for me? "Dan York" is a pretty generic name and there are a lot of us. Which one is me?

I do think one of the drives toward centralization was this "directory dilemma". I do it myself - I don't know which email to use for someone, so I send them a direct message via FB or Twitter.

@danyork But it's somewhat harder IRL. Your address, work (if any), /relationships to others/ (which is /huge/), are the sorts of things that tend to define you. "That person who's usually at some place at some time..." -- the gym, grocery store, machine shop, whatever, is another. We're all leaking bits concerning ourselves, and 33 /distinct/ ones are enough to provide a solid ID for anyone currently alive. Another 3-4 for anyone in all history.