One of the important questions for 2008 will be whether the downtrend in the dollar will continue or change. The forex traders that succeed in picking a bottom in the dollar will reap significant rewards. A fairly new set of trading and diagnostic tools in the form of Exchange Traded Funds (ETFs) are now available to the forex trader. ETFs are becoming an important asset category and provide investors and traders with new opportunities to participate in targeted markets. ETFs that are related to currency trading include dollar sentiment ETFs, ETFs on economic sectors. The forex trader can use the Powershares DB US Dollar Index Bullish Fund to detect a shift in the dollar sentiment.