Not just this.
This hasn't been the only clickjacking on facebook of late, another being a "free copy of assassin's creed 2" being posted on many people's feeds.
You click it, it takes you to an advertising page where you are to click a button on the picture of the XBOX 360 to turn the XBOX on. Where upon it posts the same advert you clicked from facebook on your feed.
Complete negligence on Facebok's part.