55. WEIGHT: A weight that Facebook assigns to different types of interactions, such as comments, likes, messages, views, sharing, etc.
56. DECAY: The time factor. As time passes, this factor effectively lowers the overall rank of a piece of content.
57. Facebook Promotion Guidelines You CANNOT condition entry into a contest based on a user providing content directly to your Facebook page. You CANNOT administer a contest that entry is automatic upon becoming a fan of your Facebook page. You CANNOT notify winners through Facebook.