With a business-guy-hat on, selling "lead-gen services" and keeping the leads locked-yp and propreitary ...is a great business model. So this is a no-brainer from the supply side. The question for the "buyers" of this kind of quasi-lead generation svc...however are what else is outhere as a substitute? Demand aggregation, lead-gen, and overall simplificatation, and modular-expandability are all good selling points but hard to create/compete with from scratch.