The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage.By Frank Holmes NEW YORK ( U.S. Global Investors) -- Gold bulls have plenty of room to graze in the stockyard these days as the investing herd migrated to other assets during the market's steep climb in 2012. For the fourth time in the past year, gold bears outnumbered the bulls in Bloomberg's weekly Gold Bull/Bear Sentiment Survey. In fact, the bears had the bulls outnumbered by almost two to one. Today's growing slew of gold bears is a "buy" signal for contrarian investors like us at U.S. Global. Research from the gold team at Canaccord Genuity found that gold rallied about 10% on average during the month following each of these sentiment "crossovers."