I wrote a Bluesky app in preparation for a client project. ATProto is over-engineered for my purposes, though probably justifiably carefully engineered for the purposes of a big social Twitter-like thing. But since I didn't have to do the engineering, so what? It's a very solid platform for many kinds of multi-user information-sharing systems.

This article does give me the impression that I should make and use more test accounts than I currently do when mucking around with ATProto/Bluesky.