I suggest to have a read to this research, which analyse relations between Theter, BTC price spikes and Bitfinex.
I hope they are wrong because if all of this is true there are going to be bad times ahead.
http://www.tetherreport.com/I am also very worried by that report considering how we went below $9k today. I have a bad feeling that there's gonna be a Valentines Day Massacre in the crypto markets.