Unless you are rich and influential and have time on your hands to make someone miserable then I would personally forget wasting time on copyright. If you get a rich book publisher to take your stuff and make profits and pay you a commission then you can be happy that the publisher will chase those people instead of you. The problem is the time you have to spend chasing people all over the place and if the article aint worth a million bucks then why bother? The same applies to patents and intellectual property. Stealing intelligently is now a pastime for many people. Most people don't have a clue how stuff is being stolen every second of the day. Don't take legal advice from the internet if you are losing a ton of money because of someone stealing from you. Get a damn good lawyer instead. Sometimes putting the fear of the law on people will stop them but sometimes it does not if people know how loose the law is and how difficult it is to do anything in a reasonable amount of time.
People must understand that time is money. Why spend a thousand dollars of your 'time" to get back one dollar? No-one wins in the end. I could not care less anymore and if anyone wants to copy anything I have done they can go ahead because they are doing it already. I see my stuff all over the internet and I don't have time to be running around policing the internet.