An extra passive income stream for Adsense site owners is the investment properties of gold, silver or another precious metal. It is relatively simple to get up and running with precious metal investment, thanks to established agencies that help you through every step of the way. You can buy bullion or coins for delivery to your home or you can arrange for the metal to be stored on your behalf in a secure location where your investment has the chance to appreciate quietly. Unlike many currencies, over the past year the gold price has risen at a rate that far exceeded inflation, making it a sound investment in times of uncertainty.