Success with this method of finding undervalued gold mining stocks led John Doody to leave teaching and start Gold Stock Analyst late in 1994 to make his research available to everyone. The results to date have been spectacular: through 2006, the GSA Top 10 Stocks portfolio has an average gain of 30% per year. Gold Stock Analyst only follows producers and near-producers as they are the only miners with data confirmed by third parties and thus have solid numbers that can be analyzed. The gold mining industry is unique because all the miners produce exactly the same final output: ounces of gold. But the stock market is not efficient, so the valuations of gold mining companies can vary widely...and provide opportunities for investors.