For today's chart we've taken a look at the AMEX Gold Bugs index because it has surpassed the $300 mark for the first time in its history. As you can see from the chart below, the price is currently 20% above the $250 support/resistance line, which may be a concern for some investors looking for a buying opportunity. We've also added the RSI, which has recently crossed above 70. This technical signal is used by traders to determine when a security is potentially overbought. Given the buying pressure we've seen over the past two days, the question now becomes: How much higher will it go?