Those who create and those who use those creations are finding it more and more difficult to work within the legalities of the current copyright laws. I remember learning about copyright laws in the museum law class I had to take in grad school. That was only a few years ago, and things have become even more strict.
If you haven’t had the opportunity to check out Creative Commons, you should, especially if you create anything. Creative Commons allows you to share your work on your terms. I haven’t yet used this, but I thoroughly intend to have a CC license on much of my work by the end of the year.