I am not at all concerned about this plunge today. It's all in line with Jim Sinclair's prediction that volatility will reach esoteric levels. In fact, my guess is, that if this volume would have appeared on the buy-side, the price would possible be above $950 right now. This plunge looked like something that has been fabricated by an extremely unsophisticated seller, or, an extremely malicious seller. Both is no reason for concern.