Did you know that YouTube has featured an April Fools prank on the site on April 1 of every year since 2008?
2008: All the links to the videos on the main page were redirected to Rick Astley’s music video “Never Gonna Give You Up”, a prank known as “Rickrolling”.
2009: When clicking on a video on the main page, the whole page turned upside down. YouTube claimed that this was a new layout.
2010: YouTube temporarily released a “TEXTp” mode, which translated the colors in the videos to random upper case letters. YouTube claimed in a message that this was done in order to reduce bandwidth costs by $1 per second.
2011: The site celebrated its “100th anniversary” with a “1911 button” and a range of sepia-toned silent, early 1900s-style films, including “Flugelhorn Feline”, a parody of Keyboard Cat.