as far as I know:
1. the english versions of huobi.com and okcoin.com are under construction; okcoin has registered an offshore company for this business.
2. both of these websites received 10 million dollar investment in last month or two;
3. btcchina.com used to rank 1st in China's market, not any more simply because it keeps changing policy on fees.
4. i still think BFX is very competitive in off China's market. but the administrative seems lack of incentive to be more competitive. they don't really care if one day's trading volume only hits thousands, part of which done in bitstamp.
5. if i were them, secure the market before those aforementioned force them to.
Interestingly enough ,those who think they are bigger enough now and greedily charges more and more fees from people who accompanying their difficulty growing times.
Still Really so naive as to think that they could always gain customers support?？