This article was written for Glass Magazine, and can be found in its entirety at:

http://www.glassmagazine.com/article/auto/phone-book-pitfalls

By Scott Orth (while at GTS)
November 4, 2008
AUTO : MARKETING
Update: This article was written while I was employed at GTS.  Out of respect for their rules, I am linking direct to the magazine source, but not placing the content here.