Not self hosted but look at your local library, I am in the US and my library has Mango Languages for free, and Duolingo does not seem to be the recommended way to really learn a new language.

Was there a small outage a little while ago?

Also faircamp and mirlo.space

Also check out Adresilo which uses Maps api to find a location then can feed it to the app of your choice.

https://git.sr.ht/~amolith/adresilo/refs/v0.0.1-alpha

I don’t think there is a technical limit, I attempted to frame it in that perspective. My question was more about maybe you set it up just for slrpnk.net users to chat about mod activities or similar and don’t want folks using it outside that context.

Can we use the movim instance for general chat with other JIDs, as in would it be an allowed use.

So great you setup XMPP and movim, I love it!