I overheard the end of one of the sessions that mentioned the Google Fusion Tables (I can’t remember who was speaking or I’d credit them here). Thanks to Jason Clark for mentioning GoogleLab’s Fusion Tables in a session; that mention led to this map.
I decided to play with it using the CIL2010 Registration database sans identifying information. Once I used BatchGeo.com to convert the City, State, Zip, Country table to geocoded columns it was a piece of cake to create a map of the people who helped make the 25th annual Computers in Libraries conference such a great event. The map is now online at People@CIL2010.