For once my slightly obsessive bookmarking habits come in handy!

http://blog.rongarret.info/2009/10/catalog-of-wealth-creatio...

From this comment tree on the original discussion of pg's "Frighteningly Ambitious Startup Ideas": https://news.ycombinator.com/item?id=3687080

The whole tree is definitely interesting in addition to the blog post linked. Also, a follow-up post a few days later: http://blog.rongarret.info/2009/10/wealth-production-mechani...