Amazon.com held up well enough in their fiscal third quarter, which ended September 30, recording another healthy increase in sales of 31 percent to $4.26 billion (with an $80 million boost due to favorable currency exchange). Operating income rose 26 percent to $154 million. The sales number was in line with analysts’ expectations but the income figure fell well short. Of greater concern to markets is Amazon’s reduced guidance for the fourth quarter. Sales are projected to fall between $6 billion and $7 billion (an increase of between 6 percent and 23 percent), and operating income is projected to range […]