In 2007 Rick Astley became the subject of a viral Internet meme in which an estimated 25 million Internet users were tricked into watching Rick Astley's video "Never Gonna Give You Up" by posting it under the name of other popular video titles. The practice is now known as Rickrolling. The phenomenon became so popular that on April 1, 2008, YouTube pranked its users by making every single featured video on the front page a Rickroll.