From the Prezi terms of use: Section 6.2: Section 9: It is extremely ambiguous of Prezi to state that it both “obtains no rights to your content other than as provided for herein” while simultaneously claiming that the “content […] is owned, controlled, or licensed by or to Prezi”. Does an arrangement of items constitute “user content”? What if you make a unique creation (your “user content”) using Prezi's artwork?