Linux Kernel Community's Statement on Closed Source Drivers
On June 23, 2008, the kernel development community issued a statement on closed source drivers and modules.
The official statement can be found here [2].
For a Q&A on issues pertaining to this statement created by the Linux Foundation's Technical Advisory Board, please go here [3].
The Linux Foundation has issued its own statement [4] supporting the Linux Kernel Developers call to action.