Abstract: A system and method for generating a Popularity Score for content objects in computer information systems based at least on user input. The system and method is functional in both binary (likes/dislikes) and ranked (numbered, star) rating systems. The Popularity Score utilizes the percentage of users that expressed a favorable opinion of the content object, as well as the total number of expressed user opinions to provide a more meaningful measure of the overall user likeability or appeal of the content object than systems that simply utilize user “likes” and “dislikes”. The system and method also generate Popularity Score Trends over various flexible time ranges that allow users to search, sort, and/or list content objects based on popularity over the selected date ranges.