Intro to How Structured Data Markup Works | Google Search Central | Documentation | Google for Developers

Send feedback Stay organized with collections Save and categorize content based on your preferences. Google Search works hard to understand the content of a page. You can help us by providing explicit clues about the meaning of a page to Google by including structured data on the page. Structured data is a standardized format for providing information about a page and classifying the page content;

[nabinno]

もう少し待ってみるか。

[HashiTakahiro]

"We strongly recommend using the rich snippets testing tool to verify…"／Rich snippets not appearing【updated 03/15/2012】