PGP (now GnuPG) is used more these days than in BBS (Fidonet) years, particularly in the open source community. Software releases and packages in GNU/Linux distributions are signed by the developers. All the time. It happens automatically without end-user noticing. Is this not one definition of "working well?" Lot's of people are passively using it without knowing.
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.
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.