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EDU versus non-EDU institutions represented for idvdevelopers mailing list post/subscription/unsubscription data: Apr 1 2010 to Mar 31 2011

EDU institutions = US and international degree granting universities, colleges and technical schools and EDU entities. Undetermined/misc data = foreign addresses with no identifying domain convention (e.g., 'ac'), etc.

Note: The chart above is interactive - click on the bars to see the data.