Who wants to create a clone of anything anyway. You can't beat Facebook at their own game. For example the site I just bought a license for will probably use less than a fourth of the functionality of stock Dolphin, but it does the functions I need better than any platform I could find, by far... Buddypress by a hundred miles, Organic Groups in Drupal, geolocation built in like nothing else... well done. Have never spent half of $500 bucks on a piece of software in my life, and I know it's the best see more investment I've made in a long time.