e-gold.com while popular, is consistently under investigation by authorities and in my opinion high risk. It is the defacto standard for all scammers due to it's anonymity.
http://en.wikipedia.org/wiki/E-gold
While not seeing the same levels of usage,
http://www.goldmoney.com/ is by far a superior organization that I would fully trust with my money. I would say it's the best of its kind.