The document introduces the KRDS Engagement Score, which is a metric for measuring user engagement on airline brand Facebook pages in Singapore. The score is calculated based on the number of likes, shares, and comments on a post, relative to the total number of fans. Brands are ranked based on their performance in three categories: top brand-specific posts, top promotional posts, and top generic posts. The top performing posts in each category are then listed along with their KRDS Engagement Scores.