Fediverse.observer (one of the longest running fediverse instance and software trackers, as it started for Diaspora) shut down. I think it would be really good to figure out how we can at least get a copy of the historical data and get that back up somewhere.
learned this thru https://cake.kobel.fyi/c/fediverse@lemmy.world/p/225784/fediverse-observer-is-offline-and-no-longer-being-developed