From the about page:
On the 7th December 2009 over 1,000 young people from 100 different countries will gather online to debate climate change. This is the largest single ongoing panel of discussions outside of the conference itself and the range of young people involved gives it an unmatched reach.
Panellists come from all four corners of the globe, from Africa, the Americas, Asia, Europe and Oceania. A map below indicates where some of these young people come from, though there are so many we can’t actually fit all the pins in.
This project used Google Wave. A second phase is scheduled for early 2010.