From the Prezi terms of use:

Section 6.2:

Regardless of whether you designate content public or private, Prezi makes no claim of ownership to your User Content, and obtains no rights to your content other than as provided for herein.

Section 9:

All text, graphics, user interfaces, visual interfaces, photographs, trademarks, logos, sounds, music, artwork, content, and computer code (collectively, “Prezi Content”), including but not limited to the design, structure, selection, coordination, expression, “look and feel,” and arrangement of such Prezi Content, contained on the Service is owned, controlled, or licensed by or to Prezi, and is protected by trade dress, copyright, patent, and trademark laws, and various other intellectual property rights.

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?

Prezi allows you to share the material you create and claims that you license it to Prezi. But at the same time it claims that it could own, control or license this material, with no clarification on which of those verbs applies to specific parts. It would be nice if Prezi could clarify this...

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Please include the DOI in your citation: http://dx.doi.org/10.6084/m9.figshare.953190
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