HRoth - 1:48 am on Jan 8, 2012 (gmt 0)
Honestly, I think often there is no discernible reason. As merchants, we don't often have all the information necessary to draw any reasonable conclusion about why business has dropped. When this happens to me, I check all the usual, but I let it go. I force myself to. And I go and add some new products or put up some new information pages. The best response to this kind of thing is to act in a positive way for your business. No point in making yourself crazy to no purpose.