What a bizarre last day of the month with USA EPC at 150% and my main CMS image gallery having it's most Page Views (175.7%), Clicks (150%) AND highest earning's day (205.3%) and overall 3rd best day of January!
I did nothing so don't ask:-)
January 2013 v December 2012 111.74%
January 2013 V January 2012 109.4%
January 2013 v January 2011 62.2%
I included the last one since it was the run up towards Panda.