Good to hear! I feel it's extra important that freer licenses are treated correctly.

What the... Is the license non-commercial?

Are you aware that a new and very popular game called Realm of the Mad God makes heavy use of your art? It's definitely a commercial game as it uses in-game credits that must be bought with real money.

http://www.realmofthemadgod.com/

In case you didn't know.