Diaspora is a nonprofit, user-owned, distributed social network. It consists of a group of independently owned nodes which interoperate to form the network. The social network is not owned by any one person or entity, keeping it from being subject to corporate take-overs or advertising.
One pod example is: https://diaspora.linuxlusers.com you can use it to sign up
Visit https://diasporafoundation.org to learn more about how it works and WHY it works.