One major problem with GPG is publishing your key in a trustworthy and verifiable manner. Keybase.io is directory of people and GPG keys, much like a phonebook. This is similar to standard GPG key directory servers.
The difference with keybase however, is that an entity can publish their public key, but also cryptographically link or prove certain web identities to that key, such as DNS, Twitter, Github, Reddit, etc.
Another added benefit of keybase is, that users who want to encrypt confidential text to us, but do not have GPG installed, can use: https://keybase.io/encrypt#schubergphilis
Simply enter your message, hit 'Encrypt', and copy paste the encrypted output in an email to email@example.com
Please be aware that we cannot encrypt replies unless we have your public key.