EDIT: Have a look at this:  <a href="http:&#x2F;&#x2F;docs.house.gov&#x2F;meetings&#x2F;FA&#x2F;FA18&#x2F;20150127&#x2F;102855&#x2F;HHRG-114-FA18-Wstate-KohlmannE-20150127.pdf" rel="nofollow">http:&#x2F;&#x2F;docs.house.gov&#x2F;meetings&#x2F;FA&#x2F;FA18&#x2F;20150127&#x2F;102855&#x2F;HHRG-...</a><p>I cannot readily cite any scholarly papers on this subject; this is from my observations as a frequent reader of &#x2F;r&#x2F;syriancivilwar, jihadology.net, and Iraq&#x2F;Syria-related social media content.  The typical pattern is for ISIS to release a video to their propaganda sites and for jihadist social media users to tweet the link.<p>al-Ḥayāt Media Center (ISIS&#x27;s media outlet) relies on the ease of distribution via protected (proxied) channels to reach their large audiences.  The reach of this content would be more limited if companies like CF wouldn&#x27;t shield it.