I thought this article by Mike Tully about determining accuracy in mapping was quite well written and might be useful to our community:
http://www.pobonline.com/articles/97036-how-do-you-determine-accuracy-in-mapping
Joseph Kerski
Joseph J. Kerski, Ph.D.| Education Manager
Esri | Broomfield CO | USA
Tel 303-449-7779, ext. 1-8237
jkerski@esri.com | esri.com
Twitter: @josephkerski
(Sept. 4)