I've read about CryptoHit exhange at
https://bitcointalk.org/index.php?topic=3342376.0a . The point here is they has no fee trading altcoin feature. I don't know what is the profit they get if they don't take altcoin trading fee? Is this a scam or what?
Every exchange has a way of earning profit. In my opinion CryptoHit because of its debut they are promoting their exchange maybe it will last some period of time later on they will put a fee in every transaction. However if this is true CryptoHit will still gain profit per coin transfer into other exchange vise versa in to their exchange. Still they can earn.