Intellectual Property Guidelines

http://delicious.com/akarrer/prospeaker

Either obtain a formal license or obtain written permission to use the material. Sometimes the owner may require you to use a more formal notice, including for example, a copyright notice. If you use handouts that duplicate intellectual property with permission, be sure to add the phrase, "Used with permission of." For example: "All of the materials presented in this presentation are either original, licensed or used with permission."