(a bit late but still) Thank you for the mention! ☺

I wrote about the compatibility on two pages:

http://draketo.de/english/free-software/by-sa-gpl
http://1w6.org/blog/drak/2015-10-08-cc-sa-ist-jetzt-kompatibel-zur-gpl

“This is the biggest news for free culture and free software in the past 5 years: The creativecommons attribution sharealike license is now one-way compatible to the GPL”