getcooking - 12:52 pm on Apr 6, 2013 (gmt 0)
We saw similar patterns yesterday. Not "zero" traffic, but huge drops in traffic at times during the day. Mostly in the afternoon as the morning started off normal (Central time zone). I kept checking the news to see if some disaster had struck that was taking everyone's attention away because like you, our SERPS hadn't changed so it made no sense.