The caveats: transaction costs can add up, and trading on margin, as most people do, is risky.

FORBES: Magazine Article

Many private investors had got money on credit to play the seemingly unstoppable stock market, just as some of their 1990s counterparts play today's market by "margin" trading on the internet.

BBC: More

Main Street investors trading for their own accounts should be especially careful about buying on margin into these lows.

FORBES: In Volatile Market, Watch Out For Margin Calls

Canadian Solar shares are trading sharply lower Wednesday morning on disappointing Q2 financial results and weak margin guidance for the third quarter.

FORBES: Canadian Solar Slides On Q2 Miss, Disappointing Guidance

More generally, although customized derivatives contracts between sophisticated counterparties will continue to be appropriate in many situations, on the margin it appears that a migration of derivatives trading toward more-standardized instruments and the increased use of well-managed central counterparties, either linked to or independent of exchanges, could have a systemic benefit.

FORBES: Transcript

Gaining an extra 270 days to trade on a non-registered foreign bank platform can help many retail forex traders who are not otherwise ready to begin trading under the new CFTC rules, which include 50:1 margin on majors, 20:1 margin on minors, the hedging rule and no FDIC, SPIC or segregation protection.

FORBES: Forex Traders Have A Little More Time