Today I found a Mastodon server that provides a free service for its local community - the server is open sign up with no human check first - but it also offers a series of paid services.
The top-tier paid service includes spreadsheets of the user's stats, linking up and optimising someone's accounts across many different platforms, an AI assistant to help write your posts & help to optimise your following count (and more).
The server has 1.4K MAU and there are accounts of people with the paying for the extra services badges ...