Sally_Stitts - 5:32 pm on Feb 15, 2010 (gmt 0)
Above, I see good, true opinions, but I do not see a direct answer to the OP's question. Let me ask it again.
In Google Webmaster Tools, if I set my "Geographic Target" to "United States", will I earn more money, or less money?
Previous advice has been to leave it blank, unless one was targeting a specific non-US country. I guess I need to try it for a few weeks, and see what happens. I can always switch back. At little cost, hopefully.