In Pubky, you use your public key to establish your own self-sovereign DNS by placing it into the most decentralized network on the planet. (public key domains)
This allows us to obsolete relays and give people credible exit from any (formerly) walled gardens, or they can self-host.
We also apply a semantic social grapg via a social tagging mechanism that allows everyone to become the "algorithm" together using web-of-trust concepts.
Pubky is in beta and is part of a wider mission to ship a parallel free-market society via open source tech and products.