When you link your Facebook account to 500px, your activity such as: favorites, uploads, and follows, are automatically shared with your Facebook friends.
To adjust your Sharing preferences, open your Account settings by hovering over your avatar in the upper right hand corner, and selecting Account from the drop down menu. On the left you will see a menu. Select Sharing from the menu. You can add or remove the sharing options to customize your experience. Make sure to hit the Save changes button in the bottom right hand corner when you're done.
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