With HTML5 quickly becoming "next AJAX", that is a buzzword for "next great technology",
one of its elements are "Microformats": standardized way to add "semantic markup" to HTML web pages.
The idea is not new, in fact there is a few significant previous attempts to do the same,
with limited results, including W3C Semantic Web RDFa.
So, what is different this time?
Google, Microsoft and Yahoo are committed to utilize this additional tags for search results.
This should help bring better organized web pages higher in search results,
and enable search filtering better than just keywords.
Here is example of Google using additional info for filtering recipes.
schema.org
This site provides a collection of schemas, i.e., html tags, that webmasters can use to markup their pages in ways recognized by major search providers. Search engines including Bing, Google and Yahoo! rely on this markup to improve the display of search results, making it easier for people to find the right web pages.
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