This is a plugin to allow the easy entry of microformat content for reviews (i.e. the hReview microformat) in WordPress pages and posts.
There are different microformats for different types of information. This plugin uses the hReview microformat for review type information. For more information, see the main microformats site.
If your reviews are displayed on your blog using the hReview microformat, it makes it easy for search engines to find and do special things with them. For example, Google Rich Snippets support the hReview microformat.