

Actually the observer and explorer links redirect to external sites (fediverse.observer and lemmyverse.net respectively)
It would be odd to single out just the biggest server instead of letting people decide themselves; I have a feeling this exclusion is to do with .world’s users having a beef with the folks running .ml 😅 (and vice verse - join-lemmy.org seems like the official Lemmy site, so ran by the .ml ppl)
Obsidian backlinks from my daily notes :) Though I use it more often to track my books, as I mostly play endless live service games 😅
I can sort of use my Steam review date stamps too to track what I played, bc I review the vast majority of games I try.
Edit: and in Steam I put the finished/dropped games in their own categories, but my tag setup there is really extensive, so probably not the best example :) (I have at least 5-6 tags on each of my games.)