TechDirt is running an excellent series on Copyright, Trademarks, Patents, and Intellectual Property. I linked to the first in the series a bit ago, but missed doing so with the second in a busy time. So, here's the link to Patents, Copyrights, and Trademarks, Oh, My!, as well as the latest in the series, If Intellectual Property is Neither Intellectual, Nor Property, What Is It? This is great reading if you have any interest in the subject matter at all. By the way, you should have an interest in this.