The problem with this approach is that users will accrue to a very small amount, mere pennies. Now, if people can put themselves price for their views as to the Exchange, then the market would be and it would be fair.
I think it's no problem, they can give the most appropriate pay what was promised. Because sometimes there's also that gives this kind of agreement, but ultimately they commit fraud (not paying). I support those who give something that is good enough for the sake of the progress of the Bitcoin and famous more people about bitcoin