[GekkePrutser]

I think one thing you should really watch out for is information harvesting from third-parties as well.

I think this will be an issue with the Fediverse as well if it gets big. The protocol itself is so open it is hard to control who views your posts IMO. So instead of having sanctioned links to third parties like Facebook has, they can just siphon off data themselves. But for a centralised platform like yours this will be easier to prevent. Might mean you have to force a login though even to view. Edit: I see you already do that, good!