Ask HN: What's up with these YouTube recommendations?
Somewhat regularly I get YouTube recommendations that I enjoy and that feel peculiar at the same time. 
Today it was this[1] video by Macroblank called 痛みの永遠.<p>Almost always I have no prior knowledge or context of the content. Never heard of Macroblank, I don&#x27;t listen to this kind of music etc.<p>Most of the top comments seem to agree. Their comments read like this one from YT: &quot;I&#x27;ve never heard of this band&#x2F;artist before, I don&#x27;t have any clue what this album or any of its songs are called, and I don&#x27;t think I&#x27;ve ever even listened to anything like this on YouTube before, but I am very glad this randomly came up in my recommendations.&quot;<p>Why do so many people at the same time get a recommendation for one specific item?<p>[1]: https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=22VFPZVN3tQ