Investing in gold and silver has typically been a way for investors to try to reduce their exposure and risk in the stock market. But while these metals can provide stability in times of uncertainty, they can be speculative in nature, as is evident in their volatility in recent months. Is investing in an exchange-traded fund (ETF) such as the iShares Silver Trust (NYSEMKT: SLV), which tracks the price of silver, a good idea for retirees and other risk-averse investors? Where to invest $1,000 right now? Ou ...