Actually, Wikia is now licensed under CC-BY-SA,
not GFDL. So I'm not sure they can even legally copy GFDL content to their wiki anymore; I don't know if the two are compatible. Either way, the GFDL requires attribution, which they are certainly not giving. That's both illegal and obnoxious.
Regardless, there's not much we can do about it. Saying something is pointless. Some of their users and admins are blatantly hostile to us. And the people who own Wikia don't seem to care about community anymore, they just care about getting ad traffic. (If they cared about the CoH community, they'd have shut the CoH Wikia down years ago rather than leaving a horribly outdated husk around to draw in search engine traffic.)
Nonetheless, they do have
a post on the topic on their forums. I'll bump it.