Copyright, the Double-Edged Sword

Here is the promised guest post on copyright, very kindly contributed by Jane Collen, who asked me to add the website of her law firm, where you'll find more information: http://www.collenip.com/. I visited the site and found it most helpful to click on "News and Events" and then on "Podcasts and Blogs" and then on the blog on copyrights. It's wonderful for those of you who have a legal bent and like getting into the weeds. 
If you have questions about the post or about other aspects...