This problem is the reason why we should check where the exchanges located (the address) and who is the owner? But, most exchanges do not provide this information, so how could we trust them? Just based on others experience, right? In this case, the problem regarding exchanges service going bad or even just gone offline such as CoinExchange will always occur and repeated. I prefer to use local exchange in my country as it's easier to access the site or even visit the headquarter and meet the owner.
An address doesn't say anything, and the owners names neither. MtGox has been the perfect example of how a (at that time) well established exchange still screwed people and the entire market over, years ago.It's a sensitive piece of Bitcoin history, but one that remains functioning as a red flag trigger of how every exchange potentially may end up in the far future. As long as people use centralized exchanges, it remains a danger.
Local exchanges are more easy to approach in most cases, but when greed strikes, and the operator sees a quick and easy money making opportunity, it will be done, that's pretty much a guarantee.
In other words, don't trust too much on location and who's behind what exchange.
