I did notice something like the filter bubble effect in music recommendation engines. I fed my Last.fm profile with music I liked and upvotes, then started list

I did notice something like the filter bubble effect in music recommendation engines. I fed my Last.fm profile with music I liked and upvotes, then started listening to my "favourites station" (sadly something I gave up a while back because they wouldn't play a thing anymore without asking for cash first). The noticeable result was that I was listening to the same set of songs while reinforcing the filter by never skipping and indicating I loved every single one.