Not sure about yahoo, but when I've needed to, I've been able to access my hotmail with no problem on the N810. If your talking about the Games folder in the N810 device memory, I think that is where some games save the user files to. When I look at mine, there is a folder in there for the game Numpty Physics. When games get installed, they install no differently than any other application. What you can do, is go to Settings > Control Panel > Panels, and from there you can customize how the Application menu sorts and displays the programs. I've added different sections (Multimedia, Games, Applications etc)