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Microformats and RDFa deployment across the Web

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Microformats and RDFa deployment across the Web Tripletalk.

I have presented on previous occasions (at Semtech 2009,SemTech 2010, and later atFIA Ghent 2010, seeslides for the latter, also inISWC 2009) some information about microformat and RDFa deployment on the Web. As such information is hard to come by, this has generated some interest from the audience. Unfortunately, Q&A time after presentations is too short to get into details, hence some additional background on how we obtained this data and what it means for the Web. This level of detail is also important to compare this with information from other sources, where things might be measured differently.

The chart below shows the deployment of certain microformats and RDFa markup on the Web, as percentage of all web pages, based on an analysis of 12 billion web pages indexed by Yahoo! Search. The same analysis has been done at three different time-points and therefore the chart also shows the evolution of deployment.

Microformats and RDFa deployment on the Web (% of all web pages)

Continues @http://tripletalk.wordpress.com

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