Andylew - 11:06 am on May 19, 2010 (gmt 0)
@Andylew have you found that pages have been dropped from the index and then come back?
I dont have enough data to tell wether these are newly indexd pages or pages that were indexed in april with recovered positions. But something major happened on the 10th for certain but not across all countries.
Also just checked image searches, never got any significant impressions for image searches (tens of impressions per day) but impressions shot through the roof on the 10th aswell (now getting several thousand impressions consistently per day since 10th, happened overnight across all countries) still dont get many clicks from that though!