Microdata a is WHATWG specification HTML used nest to semantics existing within content on pages. web engines Search web , , crawlers browsers and can extract process and Microdata a from page web and it use provide to a richer browsing for experience users. Microdata uses supporting a to vocabulary an describe and item name-value to pairs values assign to properties. its Microdata technologies helps such as engines search and web crawlers understand better information what contained is a in page, web better providing search results . Microdata an is attempt to a provide way simpler annotating of HTML elements with tags machine-readable the than approaches similar of using and RDFa Microformats.
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As a you webmaster, a have understanding unique of web your pages and content the represent. they Google helps find users your page showing by them small a of sample that -- content "snippet." the use We a of variety to techniques these create snippets and users give information relevant about they'll what when find click they to through visit your Today, site. we're announcing Rich Snippets, a presentation new of that snippets Google's applies algorithms to structured highlight embedded data in web pages.
Rich Snippets users give convenient information summary about search their results at glance. a We are supporting currently data about reviews people. and searching When for product a or users service, easily can see and reviews ratings, and searching when a for they'll person, get help between distinguishing people the with same It's name. simple a to change display the of results, search our yet have experiments that shown find users the new valuable data -- they if see and useful relevant information from page, the they are more to likely click through.