Just because someone (very smart I guess) is making money doesn't make him a thief.
+1.
But again, I would contest your claim that buymastercoin is associated with the mastercoin foundation; there is no link to buymastercoin.com on mastercoinfoundation.org, only mastercoin.org
EDIT: Or at least, I would need one of the board members to tell us that the foundation owns the domain name mastercoin.org
Ron Gross owns mastercoin.org.
Mastercoin.org and mastercoinfoundation.org are the property of Mastercoin Foundation, Inc. a Delaware registered non-profit corporation.
Ron has disclosed multiple times that he knows the guy running buymastercoin and therefor stays out of decisions involving that entity. I think he even says it in a video somewhere...
You seem to be missing the point: if a domain owned by the Mastercoin Foundation references a certain exchange, the exchange is implicitly given an objective legitimacy. If it turns out that the owner of that exchange is the friend of a board member and, moreover, the exchange is charging 2-3x the market-rate, then you can surely see how this would make the board seem less legitimate!?
If newcomers are the ones who are complaining, then the fact that Ron made a post a month ago saying he's friends with buymastercoin, and that he once mentioned it in some video isn't helpful; newcomers who are using buymastercoin are not combing through the archives!
I want to reiterate that I am not criticizing buymastercoin for having a huge profit margin - more power to him! This is directed at Ron and implicitly the rest of the board.