ohno - 4:40 pm on Mar 21, 2012 (gmt 0)

They are certainly testing a lot around that. Whether than means the one box results go or the whole tab I do not know. One thing is for sure, if their testing shows an increase in revenue for them the one box will go! Today has been dire despite the SERP's looking good. All I can put it down to is the erratic one box results.