The fediverse is truly anarchy at its finest.
Make a post about a fun thing you learned to do, and suddenly people from countries you've never been to, on continents you've never seen are chiming in with:
"I also like that thing!"
"How can I learn the thing?"
"What do you like most about this thing?"
"I have a recipe for this thing!"
"Here's another thing you might like to learn, too!"