Look at............ SFLY yesterday and today...similar type of stocks.
Look at also WTW jumped over 40% on earning on huge volume then went down slowly on profit taking for days. When volume too huge is not good either ..means anyone who one to own already bought shares.
SFLY and ACOM are stocks to be bought on oversold..much much safer and can make good money. Also watch the market closely. If mrk is weak it can pull down so fast.