Short review of the GNU General Public License.

The idea of GNU GPL is very good and offer lot of freedom to all software developers. Many commercial giants like Microsoft etc. are against this and are fighting with all their legal power to stop the spread of GNU GPL. Its very clearly understandable that Microsoft is trying to prevent the understanding that software can be free to use and share. The main issue is with the drivers for devices which Microsoft doesn't tolerate. On the otherhand you can always modify driverfiles in GNU GPL systems like BSD.