Karl Berry, long-time GNU developer and Texinfo maintainer, believes that "the GPL is the fundamental license that ties the free software community together, and version 3 does an excellent job of updating the license to the present-day computing reality." Elated by the new patent clause, he bemoans software patents as "a scourge on our cooperative efforts."
The GPL is indeed the foundation of the Free Software movement - without it, and an uncompromising visionary like RMS, "Linux" would have been just another technology fad. Long live the GPL!!