Hi there, sandy rowley here from megastarmedia.com we have been using social networking as an online marketing tool for 5 years now.
What I have learned is to target individuals who need your product or service. Then, have a good reputation, a great offer and easy solutions for them to want it in the first place, so, when you do contact them via a social network, they are allready aware what a good deal it is for them to contact you.
All the best!
Sandy
Mega Star Media INC
www.megastarmedia.com