Notes:

Ideally we'd have FIPS polygon boundaries not just center lat/long
   Can get this information from TIGER/Line data
      http://www.census.gov/geo/www/tiger/tiger2006se/tgr2006se.html
      http://www.bluemarblegeo.com/products/tigerlinemapkit.php?op=features
      
GeoOrigin is hardcoded

Move filter logic to visualization so filters can be changed?
   Will cost more in memory to store parsed file
   Or reparse on demand?
   
Possible SAI functions to help authors:

http://www.mathworks.com/access/helpdesk/help/toolbox/map/index.html?/access/helpdesk/help/toolbox/map/f20-19581.html&http://www.google.com/search?hl=en&q=google+earth+fips+boundaries&btnG=Google+Search

Need an easy way to place something some number of meters above the actual spot height
How to do scaled labels for things like zip code labels
   If we generate GeoLOD then could have different sizes in it