This evening, Facebook made a couple design tweaks designed to make the site more consistent. While none of the changes affect any core Facebook features, many users will likely notice the subtle updates.
1. Feedback on ads has been changed from “Thumbs up/Thumbs down” to “Like/X.” Now, users can give positive feedback on ads by using the same language as any other content on the site. Choosing the “X” will report the ad to Facebook’s review team.