I’m maintaining the OSM-France Discourse instance that replaced our 12+ years phpBB a year ago.
In order to prevent too much fragmentation, I’m about to test some kind of federation through RSS.
Discourse provides RSS feeds, globally (each post, each new topic) or per category (maybe even by tag).
The discourse-rss-polling plugin allows to pool external RSS feeds and create topics automatically. That’s what I’ll test between this Discourse and the OSM-France one, in order to have new topics created here being visible on the other one.
If the setup is fine, I should get this new topic on the other side