I've actually been working on something tackling exactly this for a little while now. It's a social network where you post to your own curated tags, and people can follow any subset of those. So you can post both your "local small town history" and also "important cs papers", and those interested in either or both can follow as they choose. It's alts by default. And to start, it's focused on links.

Reverse chronological is sacrosanct and it will always remain ad free to keep incentives aligned with it being a place I like to spend time. Every tag also has its own RSS feed.

It's still invite-only, but anyone reading this page is obviously a great fit so here's an invite link: https://lynkmi.com/accounts/signup/?invite_code=333ee833-e3d...