The Facebook Edgerank algorithm determines what content is displayed in a user's News Feed. It favors content from friends and pages that the user interacts with often, like commenting on and liking their posts. It also favors more recent content and types of content that tend to generate more interactions, like photos and videos over links or text posts. For brands, maximizing Edgerank involves focusing on fan quality over quantity, engaging fans with high-quality content, and timing posts strategically throughout the day rather than back-to-back. This encourages more fan interactions and gets the brand's content in front of more eyes in the News Feed.