Content theft is out of control. If they are not stealing your content, they take what you researched and wrote, reword it, and republish it as if they did all the hard work.
The biggest facilitator of it is blogspot. Google never did a thing with the half dozen DMCA complaints I filed. eHow is just a regurgitator of someone else's content. I've found my articles on the biggest article directories. I've had a doctor and other professionals in foreign countries steal my content.
Solving the stolen content is Google's real challenge, and one they have never cared about. It's hypocritical for google to proclaim they are the sheriff of quality without ever coming up with effective solutions for stolen content. They run around trying to put out grass fires when the rest of the town is burning.