Oh, now I get it, sorry for my previous post. I thought that the iPhone can play YouTube videos without Flash Player, so that already proved that it is possible. But for 3DS I am not sure of whether it has the ability to play YouTube videos. About YouTube videos in .mp4 or .avi format, I'm not sure.I think this might be possible because youtube uses .mp4 and .3gp for its mobile videos. It also uses .avi for 3d vids...
Call me a noob all you want. I think its possible even without flash.
EDIT: app. as in those things on the homescreen. If I knew how to move a topic I'd move it...






