Boy someone yesterday was awfully sure of himself that selling was such a bad idea ".....we be going uppity."
It didn't really had a fall from yesterday (bitstamp is up 20$ since yesterday, same time). The correction is in a few hours window.
600 drop from 2800 is not just a fall, it was an excellent shorting opportunity, if you are into that kind of thing.
If you know the tops and bottoms beforehand, sure.