Second Life for Lunar Lander Challenge

When writing the Spacehack post, I ran across this at NASA CoLab: Centennial Challenges exhibit in Second Life (specifically the Northrop Grumman Lunar Lander Challenge). I'm not in Second Life, so I don't know whether or not this is new. A couple years ago Robin from the Lunar Lander Challenge blog had a talk at Space Access on Second Life and NASA CoLab, so it could be related to that. On the other hand, it could be something new altogether, or a new addition to the part of Second Life that Robin described. This twitter is fairly recent (Oct 31, 2008).