YouTube April Fools. Very randomly, they are implying that Youtube has been around for 100 years, and to acknowledge that fact, they are playing around with the videos. Most of the videos on the site have a button next to them that says 1911, and pressing it transforms the video into a sepia stained, grainy film with piano music playing in the background. Hours of fun if you've got any videos on there. Well, not hours, but it provides a few minutes of entertainment.