There are several webmasters reporting that their search query report, which now shows impressions and click throughs, is showing a major drop in those impressions and click throughs as of June 2nd and 3rd. The reports come via Google Webmaster Help forums.
Yesterday, one webmaster came in and said:
WT Search Queries number of impressions and number of clicks dropped severely on 6/2 and this drop is not reflected in any other stats including Google Organic visits per Google Analytics.
Several other webmasters came in after confirming they are seeing the same thing.
Is it Google Caffeine being live related or something related to May Day or is it just a bug in Webmaster Tools?
Google has not confirmed or denied anything as of yet.
Here is a picture of a site affected by this Webmaster Tools bug named SEO Home blog:
You see that drop off? This webmaster said this has zero correlation with Google Analytics, so it must be a bug.
Forum discussion at Google Webmaster Help.
Update: Google has now confirmed this bug.
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rustybrick in Google Optimization at June 9, 2010 9:04 AM
Comments (5)


Comments
I saw the same thing with a couple of my sites starting June 1. Went from around 2000 impressions per day to 70ish. Other stats aren't showing that drop and my Adsense earnings are way up for those days. I guess we should not panic. Seems like a bug.
Posted by Christina at June 9, 2010 11:34