drall - 1:52 pm on Jul 24, 2010 (gmt 0)
10% increase in traffic on Monday and Tuesday this week followed by normal traffic on Wednesday and a 10% decrease in traffic from normal on Thursday and Friday.
Like they tested something for 2 days, returned to baseline and then started another 2 day test.
What is nuts is we are seeing top 1000 terms generating traffic being completely different for each day of the week.
Almost as if they have 4 or 5 different search engines running at once. This is on pretty big numbers, 30,000 plus unique per day so to see such huge differences rotating daily tells me something big is still brewing.