With Friend Activity you can see what your friends are listening to. Personally, I love Friend Activity because I can really get to know my friends’ tastes in music and dive right into what they’re listening to.
As of recently, if you want to continue sharing what you're listening to, you will need to enable it for your followers in Settings. If you’ve never turned this setting on before, you’ll need to turn it on to share your activity with your followers. This way, you’re always in control of what you’re sharing.
Also, you may find that you don't see much activity from those you follow - that's because they might not have turned this setting on yet. Let them know you want to dig in on the cool stuff they're listening to!
Check out this article for more information about Friend Activity.
You can also block followers if you don’t want them to view your listening activity. Check out the steps under: ‘Block someone’ here for more information.