Affiliate Marketing Secrets

I’m in the process of creating a new social networking site for my local area that includes Missouri state,counties,cities,etc. I’m investigating some of Facebook’s and Google+’s features as well. Is there anything you feel Facebook,etc. is lacking or needs improvement on? I also want to have a change in the privacy as well as other user options to make site navigation easier for members. Please let me know your thoughts,and as the site grows we would love to expand to other states as well as eventually going nationwide. Also if you feel there is a certain niche of people we should target please let me know. Any support from members here will help us succeed and move forward in development and spread our work to other points in the states. Thanks alot,hope to see your feedback soon.