Don't try to do this online
Even good sites may have certain tools that aren't so hot. Some sites may make you poorer. And sometimes the problem is you.

Buying stuff on a public Wi-Fi connection is like reading your credit card number out loud. Any snoop with the right tools can steal your info, says Javelin Research analyst Mark Schwanhausser.
Instead: Wait until you're on your home network. If you must shop on the go, use a mobile connection.
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