Some search engines (including Google and Bing) display a star rating for things like movies and downloads on sites such as IMDB and cnet.
How can I configure my site to provide this data?
Use a Review Microformat. Google has good documentation of what they use, but the full standard for the hReview Microformat should also be looked at, as it offers more properties.
Google also gives examples of Individual reviews and Aggregated reviews.
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