What's with the idea of gold / gold-backed currency.
- precious metals like gold are good commodities to back this because the quantity is relatively fixed, they're durable and there's an independent demand (people like gold things).
- return to a gold standard? : http://www.wired.com/wired/archive/10.01/egold_pr.html
- A fund in gold, track it : http://bigcharts.marketwatch.com/quickchart/quickchart.asp?symb=gld&sid=0&o_symb=gld
- protecting against hyper-inflation : http://brazil.tribe.net/thread/f7b12535-c8d4-4991-8064-1f83960ac9fc?tribeid=4354f356-567e-4688-9447-00397e48914f&r=10275