Ning.com is a very cool thing! Ning lets you create your own social network and/or join others.
Based in Palo Alto, Calif., Ning offers an easy-to-use technology platform enabling you to create and join Ning Networks for your interests and passions.
With over 1.3 million Ning social networks created and more than 30 million registered members, millions of people every day are coming together across Ning to explore and express their interests, discover new passions, and meet new people around shared pursuits.
Ning also enables artists, brands and organizations to simplify and control their online presence with their own unique Ning Network that beautifully integrates with other social media services while providing the most direct, unique and lucrative relationship with fans, consumers and members.
Founded in October 2004 by Gina Bianchini and Marc Andreessen, Ning launched the Ning Platform in October 2005 and Ning social networks in February 2007.
Check out Ning!