Hi Ed,
The comparison to the number of people online is misleading, because the
microformat stats quoted (both the Google and Yahoo figures) include
duplicate counting. One of my illustrative examples is
news.stanford.edu, where the microformat annotation is in the template,
and thus every single page has exactly the same microformat markup, i.e.
the address of Stanford University.
To verify, try the query
searchmonkey:com.yahoo.page.uf.hcard site:stanford.edu
in Yahoo Search.
The second point to make is that RDFa usage is underreported by [1]. Compare
searchmonkey:com.yahoo.page.rdf.rdfa
with
searchmonkey:com.yahoo.page.uf.hcard
These indicate that there are 2.7B pages with RDFa compared to 2B pages
with hCard. There are many caveats to these numbers, but they are more
or less on equal footing.
Cheers,
Peter
[1]
http://www.readwriteweb.com/archives/google_semantic_web_push_rich_snippets_usage_grow.php
Ed Summers wrote:
On Sat, Jul 3, 2010 at 10:18 PM, Tantek Çelik <tan...@cs.stanford.edu> wrote:
Some additional recent news:
* microformats has 94% marketshare compared to alternatives (e.g.
RDFa) according to Google (announced at the Semantic Technology
conference)
-
http://www.readwriteweb.com/archives/google_semantic_web_push_rich_snippets_usage_grow.php
- http://www.readwriteweb.com/images/richsnippets_june10b.jpg
Was it clear if Google's stats were comparing all microformat usage
with usage of only their particular rich snippet vocabulary [1]? I'd
be surprised if it was *all* RDFa vocabulary use, since that would
mean that Google are indexing all RDFa on the web. John Breslin asked
a similar question in the comments on that RWW post [2].
If it isn't clear, I'd probably refrain from citing the 94% market
share statistic in the microformats-turns-5 post. Although I guess
this sort of posturing is to be expected, and most people take it as a
given that "there are three kinds of lies: lies, damned lies, and
statistics.", especially in religious debates [3]
The 2 Billion statistic is astounding, considering there are an
estimated 1.8 Billion people online [3]. It makes me appreciate how
important efforts are to give people the ability identify, link, and
unlink their online identities [4].
//Ed
[1] http://rdf.data-vocabulary.org/rdf.xml
[2]
http://www.readwriteweb.com/archives/google_semantic_web_push_rich_snippets_usage_grow.php#comment-219873
[3] There are three kinds of lies: lies, damned lies, and statistics."
[4] http://code.google.com/apis/opensocial/
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