Legendary Exchange guru Tony Redmond wrote an article on Windows IT Pro magazine about Exchange MVPs. You can read his article here.
Tony is also an active Exchange MVP and has been for many years. He discusses the number of MVPs (Exchange and others), demographics, and what it takes to be an MVP. It's an interesting read. I knew that the number of Exchange MVPs was shrinking (used to be around 300 at it's peak I've been told), but didn't know it's down to 106.
If you're interested in seeing who my fellow Exchange MCMs are, visit the Meet the Microsoft Certified Masters and Microsoft Certified Architects site.