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Having said that, I had a look. I don't have an Amazon Associates account to try it on, but when I tried running the code as is, I got a bunch of uninit errors - the first of which seems to trace back to missing values in the @fromdate array.
The @fromdate array reads from the second line of the URL request result from amazon. I'd try to manually build an html form page that calls the right url with the right parameters, and see what it's returning. Then try to fix yourself, or come back to perlmonks with your new information.
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