'Second Life': Don't worry, we can scale

"Castronova, who said he does have some worries about the 'Second Life' business model, said it's worth sticking around to find out what happens.

'Regarding (their) business model, I have the anxiety of someone who went out to explore a river,' he said, 'and I'm already 200 miles further than I ever thought I would get and there's still more river. Scary, but I have to keep going.'"

Hopefully the first 200 miles are upstream, unless someone is picking you up at the end!