Makes boring old You tube much more user-friendly. Controls for manipulating screen size, player speed, and definition are handily accessible whilst viewing. There is a cool mini screen which pops up in the corner as I scroll down to read the comments. One can also alter the vol by simply scrolling the mouse-wheel, which saves me a visit to the little speaker icon at the bottom of the page. Simple, but very cool IMHO. There are many other options available in the set-up menu. Overall very good app. Try it.