To link your Facebook or Twitter accounts:
1. Open your account settings
2. Scroll down to the Experience
3. Click on the buttons depending on which account you would like to link
Note: When you link your FB account, your Sharing settings are all checked by default. To find out how to adjust your sharing settings for Facebook, please see this article.
To Unlink your Facebook or Twitter accounts from 500px:
1. Open your account settings ( Hover over your avatar in the top right hand corner and select Account from the drop-down menu)
2. Scroll down to the Experience.
3. Click on the Unlink option next to which account you would like to unlink.