Mangrove has almost nothing in its DB, no news for years, and a broken website.

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...

Except that it got around 2.9K reviews by now, which is more then you have right now. Furthermore, we shouldn't further fragment the few open source review efforts we have.

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

The idea of fragmentation depends on a model of decentralization that still makes the platform inseparable from the data it works with. AT separates concerns so that the priorities of your data host and the priorities of your platform host can conflict without one being able to control the other even if you don't self-host. All the reviews are just an entry in your PDS, so it's all there for any new or existing platform.

Thousands of people have already set up their own PDSes and it's inevitable managed hosts will appear soon. Blacksky just started migrating people over to its own PDS. AT's credible exit is close to reality after about two years while all the promise of ActivityPub and predecessor protocols has yet to materialize after over 15 years.

> Many OSM apps will also be reluctant to adopt a closed source solution that might be closed of any moment.

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.

Also, to my knowledge, Mangroves does not provide photo upload. Panoramax is the way to for outdoor pictures, but not for inside.