I feel like by the end of 2015 the community will really have some exchanges that will not run with the money because they are either 1) insured so even if the money disappears, it is just repaid, or 2) the exchanges are designed in a way that it is unpractical to steal the money because the exchange was designed from the ground up to not be able to steal money, and even the few weaknesses where it could be exploited would be pointless because it is in the exchanges interest in the long run to not act maliciously.