Hi All,
To add one more data point to the previous discussion about
webdatacommons.org, we have recently presented a short position paper at
the LDOW 2012 workshop at WWW 2012. Online at
http://events.linkeddata.org/ldow2012/papers/ldow2012-inv-paper-1.pdf
Please compare this carefully with the results of Bizer et al.:
http://events.linkeddata.org/ldow2012/papers/ldow2012-inv-paper-2.pdf
As it always the case with statistics, it matters what you count on and
how you count ;) For example, Chris and his co-authors did not consider
most of OGP data on the Web, which results in large discrepancies in the
counts for RDFa, as well as overall counts.
Nevertheless, both studies confirm that the Semantic Web, and in
particular metadata in HTML, is taking on in major ways thanks to the
efforts of Facebook, the sponsors of schema.org and many other
individuals and organizations. Comparing to our previous numbers, for
example we see a five-fold increase in RDFa usage with 25% of webpages
containing RDFa data (including OGP), and over 7% of web pages
containing microdata. These are incredibly impressive numbers, which
illustrate that this part of the Semantic Web has gone mainstream.
Cheers,
Peter
