The brainchild of former Goldman Sachs investment banker Gina Bianchini and celebrity geek Marc Andreessen, Ning has been growing automagically from the moment it launched its Social Networks for Everything -- a free platform for do-it-yourself social networks -- in February of last year. By June, there were 60,000 Ning nets and by August, 80,000. At year's end, there were 150,000, and today, more than 230,000.
This copy of Clay's speech on April 23, 2008 is even better than the book. Obviously the book has more development of his ideas, but this is wonderful stuff in a very compact form about our evolving participatory internet culture.