A middleman, oh. Advantage in this job is just for you, considering that all will pass on to you, codes, programs and all that. (I'm talking in general to all who make this service, for each middleman) As they said above, would be a small problem for new members, that would not be a serious problem from my point of view. On the other hand, if a old member decides to cheat people and retire from this job, you can be sure that he will scam many people in a short time. So, it is about these services, not being new or old around. In any case I wish you good luck.