On Mon, 08 May 2006 11:59:03 -0400, T o d d P a t t i s t
wrote in
::

I consider the "Big Sky Theory" to be shorthand for the
statement that decreased traffic density decreases MAC risk.
There are lots of examples of the practical implementation
of that theory. Two that come to mind a

Gene Whitt has some nice comments about choosing less-common
altitudes below 3000 AGL during cruise or avoiding flying
directly over the local reporting point because the even
altitudes and directly over the reporting point are more
heavily trafficked.

I presume that is contained somewhere he http://tinyurl.com/f5ck6

http://www.whittsflying.com/Page3.42...t.htm#Avoiding
Other Aircraft

There's lots of good advice and information there.

Thanks for making me aware of Mr. Whitt's contributions:
http://www.whittsflying.com

The FAA has discussed this issue in several contexts,
including: GPS direct routing, increased vigilance at VOR
station passage, increased incidence of MACs near airports
and the implementation of WAAS systems.

I wasn't able to locate links specific to those FAA references.