Last.fm (and the sadly defunct what.cd) have shaped my taste in music beyond what I could ever imagine: I have discovered a massive amount of amazing musicians through these recommendations; something I feel Spotify has never really been able to achieve, even after a decade+ of use.

Scrobbling has almost become a religion to me, to the point I found solutions to scrobble my Vinyl listening and consider scrobbling capability in a player as a make-or-break feature !