As for ico that threatens to kill bitcoin, one of them is CryptoSea.

KryptoSea is an exchange designed with cloud technology. The interface that allows traders to transact crypto currency.
Kryptosea began with a problem, which is still a lack of existing exchange rates and so many players who are involved in the crypto in the Asian market. As it is known the market in the Asian country of Greater Landmarks.
KryptoSea assures not only a secure and stable crypto exchange and a very good interface. But they will also give you a very small withdrawal price.Crypto ICO's are killing Bitcoin.