I found this PDF today and thought I'd pass it along...I just didn't know where to put it. Maybe the Moderators have a better idea.
Mapping the Global Muslim Population: A Report on the Size and Distribution of the World's Muslim Population October 2009
http://pewforum.org/newassets/images/reports/Muslimpopulation/Muslimpopulation.pdf
Mapping the Global Muslim Population: A Report on the Size and Distribution of the World's Muslim Population October 2009
http://pewforum.org/newassets/images/reports/Muslimpopulation/Muslimpopulation.pdf