Any way to tie into Keybase (https://keybase.io/)? They already have my public key and several identities.

An interesting direction would be to build an open Rapportive. Index and associate everyone you can think of and make the information searchable. E.g, John Doe == facebook.com/johndoe == linkedin.com/profiles/john.doe == twitter.com/johndoe == www.jdoe.com