Trust is great as proven by the developers continued effort to improve the exchange and reimburse any discrepancies.
You may lose when exchanging between currencies and a bug occurs, but these are the risks you take for newly developed technology.
For an unregulated decentralised commodity system e.g. mtgox, btc-e and cryptsy what more could you ask for
If you do not want to take the risks best to go to a bank.
I have no affiliation with cryptsy, btc-e or mtgox and have been trading on these exchanges for over 12months with the only issue being missed trades due to lag or bugs (price to pay for something that could return great value) therein lies the risk.
