I joined last.fm when it was still called audioscrobbler. I believe their logo with the stylised “as” is still a nod to that origin!

Think Spotify’s year in review, but running constantly.

To expand: it shows your top artists, albums and tracks, all the time. But it also performed spotify’s function of a recommender system; it would link music together that people often listened to together, then if you listen to something it would recommend you similar stuff. I found A LOT of bands that way a long time ago.