A system for connecting buying entities and selling entities in a business-to-business context is disclosed. In one aspect, the system allows buying entities to associate with one another to form "trusted buyer networks" so as to share "trusted buyer insights" about selling entities. In one aspect, the system allows selling entities to see the size of a buying entity's "trusted buyer network" so that they know the potential impact of either satisfying or disappointing the buying entity and receiving a corresponding rating visible to the buying entity's entire "trusted buyer network."