Part of the fun of Spotify is sharing your musical tastes with your friends and followers, but does your entire Facebook feed really need to know the details of your latest "Hot Jamz" playlist?
Spotify friends list not updating
The Activity Sharing settings is at the top of Spotify's preference window. Uncheck the boxes next to each account you would like Spotify to stop publicly sharing your activity with.
Facebook's setting is under "Privacy." You also have the option to stop sharing your activity, playlists, Top Tracks, and Top Artists with your followers on Spotify.
Now you know how to control your sharing while using Spotify's desktop app.
If you use the new Spotify Web Player, available at play.spotify.com, you'll find the sharing settings in a completely different place. Turn on "Private Session" to hide all of your Spotify web player activity from any public networks.
This setting only lasts until you log out of the service.
Upon logging back in, Private Session will automatically be set back to "Off". Turn off "Share Activity on Facebook" to prevent Spotify from posting any of your web player activity to Facebook.
This setting will stay the same even after you log in and out of your account. Click the small gear icon at the upper right hand corner of the Facebook interface. Select "Account Settings" from the drop-down menu that appears. You'll be see a list of all the apps connected to Facebook, including Spotify. Click the "Edit" button to access Spotify's controls. Click "Visibility of App" at the top of the list of settings for Spotify. Select the level of privacy you want from the drop-down menu.
By activating a Private Session, Spotify will not publicly display your activity anywhere – not to any of your linked social networking accounts, not even to your Spotify friends.
However, the Private Session is not a permanent fix; it will automatically deactivate when you log out of Spotify so you have to activate it each time you log back in.
For a more permanent solution, you’ll have to change your Spotify Preferences. Click “Edit” at the top left corner of the Spotify window, and select “Preferences” from the drop-down menu that appears.
Here you'll find the real nuts and bolts of Spotify's privacy settings.