If we all can see the price falls on weekends and rises on weekdays, why aren't we all making money by riding the trend?  I don't really know what makes weekends so special.  Is it because people are away from their computers and not monitoring the market?  Mobile phones and wireless internet make it easy. 

The next difficulty increase is going to be enormous.  Maybe people getting back into the market are paying attention to that and the easy money it should yield.  Big emphasis on "should".