it'd be nice if Lemmy had a wiki page for communities...
thank you, bot! Updated my post.
timely! Thanks for posting this here!
roll that beautiful bean footage!
if you are on an instance that has upgraded to v0.18.1 (lemmy.world; lemm.ee; feddit.nl; etc.) and browse on widescreen/desktop you will want this version (for the updated UI):
https://github.com/soundjester/lemmy_monkey/raw/dev-v2.6-Lemmy-v0.18.1/old.reddit.compact.user.js
this would almost certainly require an extension, since you'd need some sort of persistent way to track "viewed" items. I don't think a userscript can do it.
Best bet will probably be Instance Assistant (!instance_assistant@lemmy.ca ), at some point in the future. Could always make a request directly, too since this would likely be a relatively popular feature.