When these bitcoin exchanges freeze withdrawals for long periods of time how do we know they aren't doing this for profit? For example cryptsy right now has withdrawals pending for over two weeks so do to the scare the price of alts have shot up on the marketplace because people are trying to withdraw.
They are blatant scams that steals bitcoins. That shouldn't be called profit.
When I checking cryptsy.com we looked at many factors, such as the ownership details, location, popularity and other sites relating to reviews, threats, phishing etc. Although a site like may have a high trust rating, it's worth just checking the countries involved as these could indicate that goods would be shipped from abroad rather than your home country