learn difference: btc-e master exchange where legitimate crypotucurrency like litecoin is traded.
poloniex: HAHA
Poloniex = US company who is doing financial services.
Poloniex = NOT registered as money transmitter so it is an illegal company.
For reference, Coinbase is operating in Delaware, USA as well but this is their license : https://www.coinbase.com/static/licenses/delaware.pdf
BTC-e = registered... "where"?. However, almost any country(including UE) is requesting financial license if you operate with money/commodity(BTC), etc...
BTC-e = illegal company as well.