Hey guys,
So I've been on and off talking to/working with the developer at Yarn.Social, which is a federated self-hostable microblogging app that should actually work on Sandstorm as it currently is. It's not nearly as popular as ActivityPub-based networks, but it is a (small) established federation model that Sandstorm servers could participate in as well.
It uses a format called twtxt, which is, in short, a text file notation for tweets. The beauty of this is that of course, you can pull someone's feed via the fact that it's a static-published text file, which is compatible with our web publishing. (Technically, you can manually craft a text file on a Davros grain right now, and it's twtxt-compatible... albeit not an interface to follow other people's posts.)
I think between using the Powerbox proxy, static web publishing, and some auth integration, a Sandstorm package for Yarn.Social with Sandstorm's current API should be possible, and James Mills, the developer, has already gotten the app running inside a Sandstorm sandbox, though none of the integration work has been done yet.
I am curious if there are people who would be interested in this app in Sandstorm, and if there's anyone who would be interested in helping with the packaging/integration work. (Yarn.Social is written in Go.)