Stocks slide, but one famous bear is still optimistic, short-term. Eventually, though, Harry Schultz sees another crash and gold perhaps at $3,000.

Itâ??s no surprise that Ponzi schemes and bullion and currency scams made the North American Securities Administrators Associationâ??s list of this yearâ??s 'Top 10 Investor Traps.' But amid the usual suspects of unregistered securities and flat-out rip-offs, state securities regulators included exchange-traded funds that use leverage to boost returns.

Unfortunately, the growing popularity of leveraged ETFs is coming at a painful price.

BOSTON (MarketWatch) -- Everyone knows that in baseball, a triple is better than a single. But highly-traded ETFs designed to magnify the market's daily moves by as much as three times probably shouldn't be fielded in most individual investors' portfolios, experts say.

Markets can trade on technical momentum for only so long -- and then revert to a mean based on corporate earnings. Wall Street has an incredibly optimistic view of corporate earnings in the third and fourth quarters in light of greater-than-expected declines in first-quarter GDP.