I agree with the course of action you would take if somebody misappropriated your content sans attribution. The logo from infodiva.com was re-used by a "rougue" information consultant and I've been working through the exact same steps. I've only gotten through step one at this point, but intend to do the rest. I hesitate to follow through, however, because I'm debating internally whether or not discussing the situation on my blog would give too much attention and possible linkage to the perpetrator. Then there's the emotional and opportunity cost of continuing engagement with the situation. After all, by putting stuff out there as CC, you're vulnerable to misuse. And I agree with you that is the risk one takes by making the stuff you put out there copy-able. Is it worth the time it takes to combat the people who use your stuff in ways you don't like? I don't think so. Life's too short. So I procrastinate at the follow through.

Lot's to mull over. Thanks for the great post on what is sure to become a bigger issue as the web grows.