Once people get something for free, it's hard to make them start paying for the same thing.
Perfect when the US and Russia are fighting tank battles on the plains of Poland and Germany.
I want to send them in "action" attribute it self.
I can switch between the OS with the hitting of CTRL-1 for Mac, CTRL-2 for Windows, and CTRL-3 for Ubuntu. I can even share files directly in the OS's between OS's