Mod should please move this thread if i am posting in the wrong section.
In my own personal opinion i discovered that most exchangers that often develop problems are those that are trading fiat along with cryptocurrencies.
First was mtgox, cryptsy faces law suit over USD, Huobi is having one problem or the other.
The question is how do we create an exchange that last forever and that withstand government pressure and policies?
Even we can bypass the centralized govs' regulation, we can not survive from the frenquent unstopping attacking or inside scams attemps. This is the biggest weakness of cenralized exchanges. The solutions may be the decentralized exchanges, but the technology hasn't been matured yet.