@lianna For Fedibuzz just "Match posts by default", it only contains posts for this hashtag (like in the picture). For general purpose relay like rel.re you may want to use matchers, if you set "Match posts by default" there will be a lot of stuff filling your instance. Just add a hashtag or a word, set "Match whole word" and you're done.

@lianna @FediTips @feditips WithGotoSocial it's easy to subscribe to relays, it works great. The best implementation of relays in every #fediverse software I tried.

For Hashtags I use fedi.buzz relay. For example https://relay.fedi.buzz/tag/gotosocial subscribes to everything #gotosocial.

Also general purpose relays https://relay.infosec.exchange/actor, https://relay.toot.io/actor and
https://rel.re/actor work without problems. For these you may want to create "matchers", they select which posts from the "big river of toots" the relays offer your instance will use, so you won't get "flooded"