I'm currently building a review system for my open source Web map https://cartes.app, based on Bluesky. Not trivial though, you have to create a lexicon and maintain a DB based on the Bluesky stream.
Bluesky _will_ enshittify sooner or later
Better go with my own DB.
Or use a network with a well-designed protocol, a hosted service, 30 million users, a social graph, moderation...
Many OSM apps will also be reluctant to adopt a closed source solution that might be closed of any moment. And under what licenses will those reviews be? As MapComplete developer, I can not and will not be adopting a system based on Bluesky
Bluesky is not closed-source, it's mostly open. It's a hard mastodon-circle myth. Aside from being open-source, it's a protocol.
What I'm doing with Bluesky should be easy to reproduce with Mastodon, opening to 10 M accounts more.
People won't create an account to review. Not even a OSM account. We need to build on what's available, and ATProto is spot-on for this usage.