BNI Business Network International is a business and professional networking organization whose primary purpose is to exchange qualified business referrals. It is the largest networking organization of its kind. Currently, BNI has over 4100 chapters internationally. Last year, members of BNI passed over 2 million referrals which generated a billion dollars worth of business for each other.
What makes BNI unique is that it allows only one person per profession to join a chapter. Thus, once you have joined, none of your competitors can participate.