Ning ("peace" in Chinese) , helps you to
Start Your Own Social Networking Site in Minutes .Recently I came across this site, and its fun to be there, If can’t find an online community that matches your interest then Ning is there for you.
To get started, on Ning and join communities that match your interest - interact with members and once you get comfortable, launch your own social network (see example) in few simple steps.
Enjoy readings. Thanks to Amit
I was using socialmarker.com and some other sites to bookmark my URL.