I cannot think of an example exactly like that.  But in many professions, senior members are the ones who certify junior members.  Law, medicine, all the reputable parts of finance.<p>I mean, to make my actual argument, instead of just alluding to it, it seems to me that:<p>1) it&#x27;s good for consumers of an industry to have ratings of the providers in that industry<p>2) I can think of three sources for such ratings: crowd-sourced ex-customer ratings, ratings by a purported expert-at-rating, ratings by peers.  I think these each have their merits.<p>3) If ratings-by-peers is indeed useful, then in a given industry, it has to start somewhere.