So the cool part about Mastodon, right? You don't need to be on the same domain as other people to talk to them. You can sign-up on or invite your friends to:
And many others, and still be able to talk to the world / follow your friends on mastodon.social and vice versa.
Please help those servers grow by spreading the word about them! (And if you are interested in starting a new server, you can do that too!)
@Gargron Yes and no. It's true for direct communication between people, but difficult to just follow hashtags across instances as you can't subscribe to hastags worldwide. Mastodon is like email, but it should more become like IRC, so every node has the same view of the world.
@zloygik With a good subscription concept the instance only needs to process what is requested by its users. Like in IRC, where IRC servers only fetch messages for channels the have clients for. Data, nobody cares for, won't be loaded.
But I agree that a central hub is a bottleneck and should be avoided. Some kind of distributed database would be more suitable. Perhaps we can learn from other peer to peer systems like bitcoin, bittorrent, ...
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!