I had a good conversation with both Joost DeValk and Carl Hancock last night on Twitter about GPL, Trademarks, and how they go about enforcing them. Joost says he has a lawyer that sends about 20+ DMCA/Cease and Decist notices a month to infringes.

Sean Lang is in the process of fighting the DMCA takedown notice for his fork of WP Migrate DB Pro http://t.co/kKUfUSWuDj
— Jeff (@jeffr0) June 12, 2014
I'm hoping to compile the information into a future blog post since more people need to be aware that GPL is one thing, copyright/trademarks is another and the GPL doesn't mean it's a free for all.