It's worth pointing out, though, that "Cease and Desist" letter isn't an obligation, it's a courtesy. Marvel (to pick a random example) doesn't WANT to go to court. It's expensive and public, serves to draw attention to the thriving piracy industry, and might target someone who just doesn't know any better. The C&D tries to avoid all that by just asking the offender to stop.
However, if they didn't care about their image or wanted to draw attention to things, they could just sue. And the more HTMLComics-type sites rear their heads who refuse to acknowledge the Intellectual Property rights, the more likely it is that someone (again, not the large companies, but probably some idiot who didn't ask precisely what he was buying) will start doing exactly that, on the chance that there's money to be made soaking pirates, since they're unpopular anyway.
And as I suggested before, there's also the possibility that someone could scan the Silverwolf comics and Photoshop away the copyright statement in the indicia. We'd never notice until the owner (who tried to revive the line once before, not that I think he'd sink to this level) came screaming, possibly using the situation in hopes of getting back in the public eye.
