From the terms of their site:
BSA / FinCEN
Poloniex is registered with FinCEN as an MSB (Money Services Business), registration number 31000055869515. Poloniex may be required to file details of account activity to this organization from time to time.
I've never had them ask for information even when withdrawing from my account. The only thing they required was an email address. They are also based in Whitefish, MT, USA so it just seems a little strange to me.






