Bluesky, a decentralized Twitter-like social network, is pausing new signups “temporarily” to try and resolve performance issues it’s been experiencing after Twitter introduced limits on the amount of tweets you can see in a day. Even though you still need an invite code to be able to join Bluesky, it seems that the influx of new users has been a problem.
I believe they opened things up to developers recently. I do think they will become decentralized, but am more concerned it will become a “no censorship” aka “no moderation” mess pretty quickly. It relies quite heavily on filters and aggregators rather than moderators.