YouTube has changed. Not so long ago, if I checked out, say, some particular artist performing some particular song, on the right side of the screen there'd be suggestions for other videos that would mostly be other versions of the same song, other songs by the same artist, or similar songs in the style of what I'm watching.
Now it's gotten more personalized, and those suggestions are salted with stuff that refer to former YouTube videos I've watched that otherwise have no relation. I don't need this. Not only is it creepy, it's irrelevant. I know what I watched in the past, but right now I'm interested in this video, and if you're going to make any suggestions at all, just show me what this particular video might lead me, and others, to. For that matter, I like how any time I watch the video I'll get the same suggestions, so I can go elsewhere and then return later to check something else out.