One common commercial agreement is known as a royalty-free license to use an image. To avoid paying damages for using art incorrectly, it's a good idea to understand the "royalty-free" definition.

In patent policy testimony, W3C's Daniel Weitzner reiterates importance of royalty-free standards. Written by Daniel J. Weitzner, Contributor April 17, 2002, 5:00 p.m. PT ...