Do most of your subscribers live in the same time zone.

http://images.google.com.ph/url?q=http://courses.ecornell.com/eportfolios/24205/

http://google.ru/url?q=http://courses.ecornell.com/eportfolios/24625/

http://images.google.co.vi/url?q=http://okt.szilver.hu/eportfolios/2774/


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