By joining an online business network you have already increased your chances of new business opportunities.  But that’s just the beginning.  In order to fully take advantage of these networks you have to put forth the effort to seek out future partners rather than wait for them to find you.  Start by finding people with common interests: people in the same industry, potential clients, your competition.  Now use networks like Madison Who’s Who to develop your client list and business contacts.  Remember, everyone who is in your business network is there for the same reason you are.  So make a point to stand out among the rest.