[wanda]

Parent post's product, Sublevel, would make for a nice public communication utility.

Unfortunately, while I like it, it's definitely not going in the same direction as Twitter and is not likely to match everybody's idea of a social network. While its current members, myself included, like it for its simplicity and lack of embellishment, it is precisely because it comes with fewer features and deliberate design choices against janky embedded media, it does not and likely will not represent a Twitter alternative for the vast majority of Twitter users.

Sublevel could however be made into an interesting, social-first alternative to Pinboard.

If Sublevel were for sale, that's likely what I'd do with it, offering an archive utility to save HTML where duplicate content is only saved once and blindly shared among users to conserve space. Then stick an incrementally increasing price tag on membership like Pinboard. Maybe membership tiers.

I remember as well numerous decentralised alternatives to Twitter like Diaspora and Twister IIRC.

Twitter is horrible to use and would benefit from a complete rethink in terms of UI, maybe something along the lines of Opera Coast.