I just remembered that I met one of my best friends to this day through Last.fm. It was 2009 or so, and you could leave messages on concert pages.

I posted asking if anyone wanted to go with me since I didn't want to go alone, and she sent me a message.

Good times.

I second this. I started as an Audioscrobbler user before the Last.fm merger. I have tracked nearly every track I've listened to for 21 years. It's awesome seeing how my habits have changed over the years.

As a long-time user, I do enjoy seeing how my tastes have changed over the years and which artists and albums I play the most. I also tend to agree that the Last.fm recommendation engine was perfectly fine for my use case compared to the algo that Spotify uses now. https://www.last.fm/user/wyclif

Same. I have one or more gaps in there which I wish I could go back and correct. I feel like integration with the service is a must for any music thing I pick up, the most recent being this year, resurrecting my old iTunes library via Navidrome.