According to a new report by Parks Associates, Google sold 3.8 million Chromecast devices in the United States in 2013, Roku sold about the same number of its streaming boxes, and Apple sold only about 2 million Apple TVs. However, globally, over 20 million Apple TVs have been sold in total, while Roku has only sold 8 million. follow link
Expose Shortcut for View All Windows
In Expose mode in Snow Leopard, press the Tab key to view all windows belonging to one application (equivalent to pressing F10 or Control-F3 on recent laptops). Press Tab again to switch between applications while remaining in Expose. You can also click an icon in the dock.
Apple TV Falling Behind Chromecast and Roku in the U.S.