There is nothing different between this and
http://www.osx86project.org/. It is not illegal to put OS X on another machine. Apple will just NOT support it.
Look at your PC or Laptop that you have in front of you, most probably bought the machine with Windows, unless you bought the machine with NO operating system. Load a Linux partion on it and your computer won't boot anymore, see how far your warrenty, with the company you bought it from, gets you. I'm sure that HP, Sony, Toshiba ect. only supports Windows or the operating system that came with the machine.