Sure your friends can be great referral resources, but the best business networks are the ones that reach beyond your circle of friends. Quite often the biggest deals are made with the random person you meet or a friend of a friend you hardly know. Take time to cultivate and look for people beyond the folks you know personally. Reaching out and connecting with new people is the key to successful networking.
Who are the people on the fringe of your network? How can you find out if they would be good for your business? How could you connect with them?