What this tool can do for you:
Help you better understand how to determine the "fairness" of a use under the U.S. Copyright Code.
Collect, organize & archive the information you might need to support a fair use evaluation.
Provide you with a time-stamped, PDF document for your records [example], which could prove valuable, should you ever be asked by a copyright holder to provide your fair use evaluation and the data you used to support it. [why is this important?]
Provide access to educational materials, external copyright resources, and contact information for copyright help at local & national levels.