Well, the disaster at Groupon should probably strike fear into the hearts of those owning such stocks as Zynga and, to a lesser degree, Facebook. Normally good-looking long patterns can get blown to smithereens overnight.
I imagine that GRPN will spend its future days filling in the gap below and basically farting around at approximately this price level. The bullish breakout is completely trashed, and GRPN is a piece of cow dung once more.
