It's also reasonably good at context sensitivity, so when I'm playing a backing track for my guitar 90% of the recommendations are for other backing tracks, with the rest being decent song and music theory channel recommendations rather than whatever else I've been looking at this week.

The flip side is, I somehow appear to have accidentally clicked subscribe on some insane Trumpist 'news' channel I probably stumbled on via a forum link, and it very quickly took over the push notifications on my phone. That might be subscribe functionality working as intended, but it took more effort to identify the source of nonsense spam and unsubscribe from it...