A Google algorithm update focused on analyzing the quality of a website’s on-page content. Initially released February 2011, and updated periodically after this release, similar to Google Penguin. This update would determine if content on site pages was related to queries it was being displayed for, and alter the site’s rankings accordingly. Sites with low-quality content saw significant ranking drops due to this algorithm update. The algorithm has now been assimilated to Google’s core search algorithm, and can assess content quality in real time.