Most social networking sites provide a service of bringing people together while they are advertising venue to their members. Some social networking sites make over 20 Million a month from doing just that keeping all they make off advertising to their members. Let's face the members are the ones putting all the content on the site but yet most dont share one cent of the advertising revenues with it's members.
However some new social networking sites coming onto the scene have started changing this where they share a portion of their advertising revenue with their members. Some even have a internet radio station, the sites are adding more things for their members all the time. Some Social Networking sites have blocked the paying social sites name even in private messages.
One site that I am a member of now is Yuwie that pays its members for doing the same thing they do on other sites that dont pay. So might wanna check them out and see if it could be a match for your. The way I look at it cant never have too man friends but certainly can have not enough friends.
They are free to join just like all the other social networking sites. If you would like to know more just let me know.