NGSCS Radial Search creates a Google Earth network link that plots the approximate location of NGS control stations within a specified distance of the view center. Requires Google Earth Version 4.3 or later.

“Thus the most important value of [volunteered geographic information] may lie in what it can tell about local activities in various geographic locations that go unnoticed by the world’s media, and about life at a local level.”

ArcGIS 9 extension- documentation needs work