A browser extension created for people who listen to music online through their browser, and would like to keep an updated playback history using scrobbling services, such as Last.fm, Libre.fm and ListenBrainz. Available for Chrome, Chromium-based browsers (Opera, Vivaldi, etc), Firefox, and Safari (macOS and iOS).
Some people actually do, especially for people from similar music fandom.
I use Last.fm for more than decade and its nice to find fellow friend that have incredibly same niche music taste.
In a way, it’s the same as peopel sharing books collection on Goodreads or tracking movie list on Letterboxd.
Sounds like social media for a specialised case. Thanks for your explanation.