Online shopping: a blessing and a curse?

An online operator of sorts asks if there's anything you need help with. "Sometimes someone with a shopping cart will try to leave the site," says Balser.

Online retailers have been working overtime to improve their Web sites in time for the holiday shopping season. While most of the upgrades should make shopping go more smoothly, some could encourage overspending, overly hasty purchases or simply overlooking things that should be red flags.

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