Amazon Product Advertising API Developer's Manual page 118

Product Advertising API Developer Guide
Important
The content of the Reviews response group must be periodically updated as it expires in 24
hours.
The reviews are returned in the "Customer Reviews" section on the DetailPageURL web page, as shown
in the following figure.
The following XML snippet shows part of the equivalent Product Advertising API Customer Reviews
response returned by an ItemLookup or ItemSearch request.
<ItemLookupResponse>
<Items>
<Item>
<ASIN>0316067938</ASIN>
<CustomerReviews>
<IFrameURL>
http://www.amazon.com/reviews/iframe?akid=[AWS Access Key ID]&as
in=0316067938&exp=2010-09-02T17%3A54%3A07Z&linkCode=xm2&summary=0&tag=ws&trun
cate=256&v=2&sig=[Signature]
</IFrameURL>
</CustomerReviews>
</Item>
</Items>
</ItemLookupResponse>
After you receive the IFrameURL in the Customer Reviews response, you can embed it into an HTML
page. For example:
Reviews
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