References to user interface elements, such as Like or Share, or any other Facebook site features. The goal here is to display your best content or elements that keep users engaged and on page. Brands have one month to get ready for the changeover...
With their broad experience, such people can often provide critical insights into which elements to test. Many of the elements that you may want to tune involve copywriting: headlines, body text, sales copy, call-to-action, navigation link naming...
Books I've taken a lot from include: "The Inmates Are Running the Asylum," by Alan Cooper, "The Design of Everyday Things.by Don Norman, "The Humane Interface," by Jef Raskin, "Sources of Power," by Gary Klein (if you want to go more in depth on...