If you no longer want to link this account with one on a social site, you can break that link. You can link to it again later.
Step 1. Log into Your Account
Step 2. Open Your Account Profile Page
From the navigation items on the page, click My Account.
Step 3. Access Your Linked Social Accounts List
Click Linked Social Accounts from the links along the top of the page.
Step 4: Break the Link with a Social Account
Locate the account and click Remove from its Action column. The success message displays along the top of the page.