Is there any automated way of finding your G+ Friends (that you've circled in G+) on other platforms and following them there? There's a similar question for each of Facebook, Twitter, Mastodon, Diaspora, MeWe and so on. There is a Mastodon-Twitter bridge for doing this, but it seems to be broken currently. In theory this lets you find your Twitter friends on Mastodon. As far as I can guess it's using people using it to build a searchable database of links. Somebody said: "One problem, among others, is they use different names..." And I replied: If only there was a unique identifier that most people used. Like email, say, ;) Or mboxsha1sum. Or PGP. Except Google Takeout, G+circles doesn't appear to contain email addresses even if the other profile has them set to public. And few systems these days seem to use contact emails as a way of finding your existing friends. Or if only there was an open standard for importing and exporting your social graph. Like FOAF ...