Ultimately, we need to recognize that Linux is a 15-year-old kernel and that there will be another technical development to superscede it eventually. I can't say what that will be, but I think the best chance of mobilizing individual contribution to it would be to use GPL 3.

*Bruce*

http://digg.com/linux_unix/Use_GPLv3_for_Linux_Kernel_says_Bruce_Perens

Cheers Praveen