Gold prices dropped sharply along with global stock markets Friday as the dollar strengthened. Analysts cited several technical and fundamental reasons to buy now. Spot gold prices skidded 1.09% to $1,723.60 an ounce, a six-week low. PowerShares DB U.S. Dollar Index Bullish (UUP), tracking the greenback against a batch of major currencies, rose 0.35% to 21.81. "I would look for support now at the 200-day moving average that currently stands at