MIT OpenCourseWare 2011 year-end numbers

Another good year for MIT OpenCourseWare.  Big story here is the tremendous jump in YouTube numbers–this plus the 12 million iTunes U downloads and the redistribution we are getting through Chinese sites like 163.com (which we get no reporting from) means that a lot of the OCW activity is through our video redistribution.

• 18.6 million visits (+1.2 million over last year) 10.2 million repeat visits, 8.4 million new visits
• 9.8 million visitors (+200K)
• 1.92 visits per visitor (+0.10)
• 101.4 million page views (+3.1 million)
• 5.42 pages per visit (-0.21)
• 1.8 M zip files of course content downloaded (-.1 million)
• 11.4 million YouTube views (+4.1 million)
• 12 million iTunes downloads (+0.2 million)
• 317K visits from the MIT community (+42K)
• 361K visits referred by StumbleUpon (-85K); 183K by EducationPortal (+23K); 178K by Facebook (+100K); 157K by Reddit (-15K); 117K by Wikipedia (+5K); 111K by YouTube (+16K)
• 33% of visitors used Firefox (-5%); 26% used Chrome (+11%); 23% used IE (-11%); 14% used Safari (+4%)
• 2.37% used iOS (+1.57)

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