The Toronto stock market was slammed with its biggest single-day loss since the tech bubble burst seven years ago as nervous investors worried that the Canadian economy will feel the ripple effects of a looming recession in the United States.The 605-point drop - 4.75 per cent of the market - trimmed more than $90 billion in value from the TSX. That’s on top of a 6.6 per cent dive last week that had already wiped out all of the market’s gains for 2007. (AOL CA)