Book excerpt: Ignoring gold and silver this year will cost you more than all the dumb financial decisions you can make put together.Ruff's Little Book of Big Fortunes in Gold and Silver is not written for Wall Street, but for Main Street. It is a detailed guide to a once-in-a-lifetime chance for middle-class Americans to get rich investing in one of history's greatest bull markets. Ruff makes a usually arcane subject easy to understand, and even humorous. This bull market will dwarf even the 500% to 1700% profits his readers made in the metals in the 70s, and as usual, Ruff is out in front.As Yogi Berra said, It's d