Always looking for interesting papers that educate you on domains - really enjoyed this paper...
Introduction to Spatial Coordinate Systems: Flat Maps for a Round Planet
SQL Server Technical Article
Writers: Isaac Kunen
Summary: This paper is an introduction to Earth-oriented coordinate systems, projections, models, and mapping. While not specific to any technology, this information provides valuable background for those who will use spatial data in SQL Server.
Cross Posted from Dan Fay's Blog (http://blogs.msdn.com/dan_fay)