@GNUmatic@mastodon.trueten.de no, that's not it. https://tags.pub/#why explains why. Following a hashtag locally on your server only shows tagged content that arrived at your server for other reasons. So, big servers like mastodon.social have much more content in their hashtag feeds than small servers. So, tags.pub helps people on small servers follow topics they are interested in, without having to migrate to a big server.