could be right, flash crash was an hft machine went down in asia and the firm shut off all its machines,the dominoes had started falling before the other hft's found out,
if this were a popularity contest the widest spots on the graph,are areas where it traded the most often,which may provide resistance..i like your approach
google on the best seller list yesterday similar to ibm, day before it's earnings http://online.wsj.com/mdc/public/page/2_3022-mflppg-moneyflow-20121017.html?mod=mdc_pastcalendar
2nd cross on uvol dvol, chance of a chop day as leaders,bulls, bears ,are undecided on who's turn it is to lead,goog earnings after close,chnce of a drop