“Tags work a little differently than hashtags do on platforms like Instagram and X (formerly Twitter). When composing a Threads post, you start a tag by tapping the # symbol and then typing out your topic. But instead of being limited to just one word, you can type out a whole phrase (with spaces!) and add special characters, according to Mosseri. However, you can only make one tag per post.”
I wonder how the tags will work if they federate with ActivityPub.
They’re allowing hashtags to have multiple words in order to make them uncompatible with both Xitter and Mastodon…
That wouldn’t make them incompatible with the fediverse. ActivityPub can support tags with spaces, even though no current fediverse platform allows it. A post with a hashtag with spaces would still federate to other services and if that services is robust enough, should still be linked up so that you can click it to see the tag feed.
PeerTube allows spaces in its tags, they get stripped out at one end or the other when a video federates to Mastodon to make them compatible.