About.

wp-RDFa is a WordPress plugin to bring the Semantic Web to your WordPress blog. Currently this plugin supports FOAF and the Dublin Core.

FOAF Support.

FOAF is Friend of a Friend, and can be used to relate your personal information to your blog. It can also be used to relate other users of your blog to you building up a semantic map of your relationships in the on line world. FOAF support publishes your details that you set in your user profile. It will also publish subscribed users of your blog, you can customise these settings from the WordPress admin settings panel and set which levels of  WordPress user you wish to be included in your FOAF file.

Dublin Core Support.

wp-RDFa uses the Dublin Core markup to automatically tag posts with the title, creator and date elements. A sample of the RDF output can be seen below. This is an example of one post, you will get many elements like this for each post on your blog. Any data that is created within the_loop() will be automatically tagged.

<rdf:Description rdf:about=”http://dev.squarecows.com/2009/03/27/wp-rdfa-plugin-update/”>
<dc:date xml:lang=”en”>2009-03-27 23:47:47</dc:date>
<dc:title xml:lang=”en”>wp-RDFA plugin update.</dc:title>
<dc:creator xml:lang=”en”>Ric_</dc:creator>
</rdf:Description>

Installation.

  1. Download the latest version from the downloads section.
  2. Extract the files from the zip, you will have a directory called wp-rdfa
  3. Upload this folder to your site and place it in ./wp-content/plugins/
  4. Login to your WordPress and go tot the plugin’s section.
  5. Select wp-rdfa and active it.
  6. Go to settings > wp-rdfa and customise the settings if you please.

Screenshot.

Admin Settings Panel for wp-rdfa

Admin Settings Panel for wp-rdfa

Download.

Direct from WordPress: http://downloads.wordpress.org/plugin/wp-rdfa.0.3.zip

SVN Repository.

Official WordPress repository.

svn co http://svn.wp-plugins.org/wp-rdfa/

If you’d like to help with this project drop me a mail via the contact form and I’ll set you up with SVN write access. In the mean time you can check out the source out from one of the above locations.

Future Development.

  • Improve Dublin Core support
  • Add VCard Support for all high level users
  • Look at RDFa support within RSS

Further Reading.

In the mean time if you want to find out more about RDFa this is a good starting point:

by-nc
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