[DrewAllyn]

> If they can't do that, the mediator will quickly gain a reputation as being unreliable and to be avoided.

I'm not saying you are a libertarian, but this is an argument that libertarians use a lot. I don't buy it. Look at the companies, organizations, and people out there today who deserve bad reputations, but don't have them. Ask most random buyers what they think of PayPal, even, and they won't realize there is anything wrong with it. Hell, a surprising chunk of sellers don't even have a problem with PayPal.

[mike_hearn]

I would say that PayPal has a very bad reputation, but there is not much competition so people have to deal with them anyway.