Initially, it was a way to maintain your identity online. Which I really liked. Finally a way to get to people's keys without GPG keyservers.

Then the Mac app placed itself in the menu bar, loaded a "helper", installed a ton of crap, asked for my private keys, and I was no longer sure what it's really doing.

Then Keybase started morphing into… well, I'm not really clear what it's becoming these days.