https://gemini.circumlunar.space/docs/faq.html
https://gemini.circumlunar.space/docs/gemtext.gmi
seems useful for those that still search out content rather than having unwanted content "pushed" to them
@dimkr has developed gplaces, a reader for gemtext, and included it with the newest VanillaDpup,
https://github.com/dimkr/gplaces