Reason to use the other file: "A PNG version of this file is now available."
Summary
DescriptionMOOC poster mathplourde.jpg
English: MOOC poster April 4, 2013 by Mathieu Plourde licensed CC-BY on Flickr, explores the meaning of "Massive Open Online Courses" aka MOOCs. This has been used in a reliable source,http://www.wamda.com/2013/05/what-are-moocs-what-mean-for-middle-east , so it's not just original artwork, but was licensed CC-BY first.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue
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Better trimming job, also posted on Flickr (http://www.flickr.com/photos/mathplourde/10425003764/ ) by the original author under the same CC-BY license. Mathplourde requested that it be uploaded (quite rightly - very much appreciated)