Having such an account could scratch an investor's "investment itch, " he says, and serve as an educational tool.

WSJ: When Clients Invest on the Side

At some point, as China's dollar hoard piles up, its middle class is going to itch to get a return on its savings and Beijing's financial control mechanisms may start to slip.

FORBES: Sidelines

Should you ever get the itch to illegally peek at a former employer's servers, take a lesson from Michael Bravin: don't.

ENGADGET: Band Pro seeking damages against ARRI and Michael Bravin, expects to get its data back