Amazon's Costly Bells and Whistles

The online retailer is stepping up spending on new Web features and services. That's crimping profits and trying investors' patience

Amazon.com (AMZN) Chief Executive Jeff Bezos insists it's still Day One on the Internet, so he must keep spending to pursue new growth opportunities. But investors are getting increasngly impatient for a new day to dawn -- when the pioneering online retailer's investment in technology will finally start paying off.

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