I'd believe PGP is in wider use today than Fidonet is, but not much wider.
I have to laugh that Snapchat has apparently solved the identity exchange problem and PGP is still stuck with these ridiculously baroque implementations.
>I have to laugh that Snapchat has apparently solved the identity exchange problem and PGP is still stuck with these ridiculously baroque implementations.
Er, how? Admittedly I've only used it a few times, but the only thing that sticks out along those lines is the Snapcode system. How is that any different than scanning a QR code in OpenKeychain?
But for messaging it's indeed very marginal. In open source projects' techical mailing lists and version control systems there is pretty much message or commit signing but that's a marginal group who does that.