Chrispcritters - 8:51 pm on May 10, 2010 (gmt 0)

Have you compared positional click through rates across differing date ranges in WMT?

When comparing CTR for several high volume search phrases (to my site) I do not see any change in the CTR for positions 1, 2, or 3 when looking at date ranges a month apart. Impression #'s appear to be too generalized to see anything there.