In fact, as Money Mail has pointed out repeatedly over the past four years, precipice bonds can be extremely high-risk investments. This is because they may link your money to just a small basket of shares and there can be no limit to the potential downside if shares fall. With some, your money can disappear at two to three times the rate at which share prices fall. Now both David Aaron Partnership and its clients have paid the price - although I suspect that people who followed Mr Aaron's advice by going into precipice bonds will end up rather poorer than he will.