Kelowna - 3:34 pm on Jun 2, 2010 (gmt 0)
For the top three positions, chitika shows this:
#1 - 34%
#2 - 17% (2x less than #1)
#3 - 11% (3x less than #1)
Using the data from the webmaster tools they show my #1 listing as getting an 11% click through rate. This is a two word term and does not have any local sites above it. That shows that having the listing 1/2 way down the page knocks down the click rate for sure.
Does anyone have any data on a site that is #1 and DOES HAVE local stuff ahead of it? It would be very interesting to see the effect.