Have you connected your Amazon account to Twitter or Facebook in exchange for Amazon MP3 credit? You don’t have to leave them connected forever. Unlinking them from your Kindle Fire HD is quick and easy.
Pull down the notification bar from the top of the Kindle Fire screen and then tap the More.
In Settings tap on My Account.
From the account screen select to Manage Social Network Accounts.
Next you’ll be on the Social Network Accounts screen — tap unlink next to each account. There’s no confirmation, the account is instantly disconnected.