Public Keys can be People Too

Why not let public keys be people too (by turning them into URIs)? Here's one way, based on RFC 2015:

<link rel="me" href="http://www.abstractioneer.org/" title="My Blog">
<link rel="me" href="data:application/pgp-keys;base64,AHEIJ3334..." title="My Public Key">

And then we hook it into the Social Graph API.