Hmm... I never knew about you guys. I think I may need to do this. I've been meaning to get rolling again with GPG, in part because I want to move to `pass` for password management. Might need to spend some time today getting my ducks in a row.
Cool, just keep in mind Keybase isn't an email client. So if your goal is encrypted email communications, you'll still need to pick a client for that. Whiteout/Thunderbird w Enigmail/Mail.app w/GPG Tools are all apps to look at for your desktop.
Keybase right now is basically just a directory. It's a different model for making sure you get the right key for the right person. As diafygi pointed out, the traditional PGP keyserver model is busted. There's no canonical ordering of key announcements and revocations, and the gossip protocol is messy. Solving this based on social accounts is our top priority. Every proof or revocation you do on Keybase is put into a chain for you, and in turn that chain is attached to our merkle tree and written to the bitcoin block chain. We want to prove everyone in the world is getting the same answer from Keybase, everything is ordered, and that we're not omitting anything.