I understand that peer reviews can play an important part in the screening process. How, then, was the initial group of Certified PROs selected?

For the core group, a verified, tested credential from a major association was required. In addition it was necessary that there be clear evidence of business reliability, good citizenship, ie. agreeing to be bound by the professional guidelines as a condition of participation as well. These select members were contacted and screened on a person-by-person basis.