I'm not sure but recently my CTR from search has really dropped off. I've never had that many page impressions from search but not so long ago the CTR was excellent. It suddenly went down in October and it has stayed that way in November.
nomis5
9:34 pm on Nov 22, 2011 (gmt 0)
For me Adsense for Search income has recently gone through the roof. Maybe no one likes my site and is going to others.