# Use Youtube player (with Youtube AD) #<<<>>> # Use our player (Downlaod, Unblock & No Youtube AD) 再生できないときはここをクリック click here if failed to load 如无法播放请点击这里#

INFO:
It's hard work to make a user interface that's easy to use. The end result may seem obvious to an outsider, but ease-of-use comes from trying out many design ideas and rejecting ones that are too difficult while polishing those that make the UI better.
Make it Easy (UX Slogan #8) (Video) - NN/g