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?
How can I provide star rating metadata to search engines?
seo;meta tags
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 lists itemreviewedratingreviewerdtrevieweddescriptionsummaryGoogle also gives examples of Individual reviews and Aggregated reviews.