Thought I'd take this opportunity to share the outcome of my experiment with the book I enrolled in Amazon's KDP Select program.
Free downloads: 118
Other Sales Resulting From Experiment: 0
Current Sales Rank For Enrolled Book: #704,367
Take it for what it's worth and nothing more.
Among other things lined up for 2012, I plan to have a ghost story collection ready by Halloween, have several children's books available for Christmas, and shop around my first script. Currently, I'm working on the third book in the Bad Mojo series, enjoying spring-like weather in the South, and trying not to get discouraged.