Please, read the License Agreement Rated 1 out of 5 stars

Are you kidding me?

"In creating Clips, Tags, Titles or Commentary, you grant us a royalty-free, perpetual, irrevocable, non-exclusive, transferable right to use, reproduce, distribute, transmit, disseminate, display, publish, modify, perform and create derivative works thereof (in whole or in part) worldwide and to incorporate them into other works in any form, media or technology now known or later developed."
Extracted from the License Agreement, it's just insulting what it says.