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The Open Thread tag is here. The Open Thread sequence is here.
Is this site just riddled with spammers anymore? Or is the way the site works just arcane or something?
I keep seeing ancient posts (usually by Eliezer himself from 2007-08) popping up on the front page. But I'll scroll through the comments looking for the new one(s) which must have bumped it onto today's list, but they're nowhere to be found. Thus someone is bumping the things (if that is indeed how the site works), but if it was a spammer who got deleted before I saw the thread in question, I wouldn't see said spam post.
It sounds like you're on the "Enriched" tab, i.e. a feed of posts that includes some algorithmically suggested posts. Probably you were switched over to it in an AB test. I'm not 100% sure how you were supposed to find that out. From reading that post, my guess is that via the stickied "LW Frontpage Experiments" at the top of your feed.
So, the reason you're seeing some old posts is because our recommendations engine thinks you might like them (though I understand the team working on it has put a fair bit of effort towards biasing it towards some of our goo... (read more)