Credit exchanges for Massive games are inimitably useful mechanisms - the notion behind them seems counterintuitive, and we've certainly enjoyed some amusement at their expense. But - if you're a person that thinks of your own time as the prime currency and the various manifestations and products of that time as inherently fungible, it makes a lot of sense to resort to brokers of strange currencies. If somebody takes advantage of your exchange itself, though - if they purposefully manipulate the intangibility of the product you sell - it must be a pain explaining to normal people exactly what it is you do.
