TBH, I am a bit concerned about OKcoin, and all the stuff that has come out about them. The corporate structure and shady people involved, the lack of security protocols, the belligerence of Star Xu, the allegations of running bots, the exodus of all those executives..... doesn't look good.
Do you have a link to any of this? This is all news to me. I've been away from trading for a while. Was thinking of sending a little bit to OKCasino to do some 20x gambling.

There is a lot of stuff on r/bitcoin. I'm a bit lazy to pull it all up myself. But google is your friend.

heard shady trading in okcoin, and although I don't like okcoin too, but any sample reddit discuss more shady things with okcoin??
any details link?

I'll just leave this here. Bolded for emphasis. Thanks AceWallen for pulling up the link.
I have asked them to do a proof of reserves and publish balances managed by them - really hoping they are doing it.
the thing is, how much trust can you put into that? there was a reddit thread recently where the former CTO stated that Okcoin gamed the audit. here's the link:
https://www.reddit.com/r/Bitcoin/comments/37tm1b/czs_statement_regarding_the_dispute_between/I can confirm OKCoin removed a number of accounts (used by OKCoin bots) to pass the Proof-of-Reserve audit in Aug 2014. In essence, these bots trade on fractional (or fictional) reserves. Stephan Thomas was lied to during the audit. This is an unfortunate limitation of the proof-of-reserves method.
And also this:
Up until the time of my resignation, Star alone holds the private key to the OKCoin code wallet. The backup of the private keys were held by Stars wife and mother, both of whom are non-technical. Such was the state of OKCoins cold wallet security. I have insisted many times to switch to a multi-sig solution. Star said yes, but always delayed the task.
