Happy Father's Day! It's still not too late to order my AdSense book for your father!
In any case, in Chapter 3 of Make Easy Money with Google I discuss copyrights, plagiarism and other related issues. A great resource that all Web site owners — that's you! — should explore is Ivan Hoffman's articles for Web site owners and designers. These are a treasure trove of information written by a lawyer who specializes in intellectual property issues. I highly recommend it. (Note that Mr. Hoffman's articles are based on United States law.)