It used to be difficult for me to imagine a simple application that really use web semantic technologies.
Then yersteday, I attended a Yahoo presentation in Paris about the searchmonkey API
http://developer.yahoo.com/searchmonkey/
So I give it a try with my favorite web site drupal.org.
It is fun. You should try. It just takes two minutes.
But drupal.org doesn't use websemantic technologies like microformat and RDF yet.
To see the difference, try it with the url facebook.com/p/*
Then you have also the fields available from the hcard microformat to play with.
Is there a drupal web site out there to test microformat or RDF with yahoo searchmonkey ?
Something like "CCK semantic web compliant fields" ?

Comments
Website made with Drupal using RDFa
I use RDFa on my Website made with Drupal (http://www.lespetitescases.net). I introduce RDFa markup in drupal templates. If you are interrested by this, you can read this two posts in french about this "RDFaization" : http://www.lespetitescases.net/rdfaiser-votre-blog-1-la-theorie and http://www.lespetitescases.net/rdfaiser-votre-blog-2-la-pratique .
Using this markup, I made a Yahoo searchmonkey app to have a customized presentation for blogPost (http://gallery.search.yahoo.com/application?smid=FnV.s). If you want another informations, you can read this post : http://www.lespetitescases.net/yahoo-apporte-bananes-web-semantique-1 . I hope to write the second part the next week.
I hope these informations can help you, you can contact me if you want another informations.
Your articles are great
If I understand it is easy to add the RDFa markups directly in the templates files.
But then can we imagine a tool for common users that automaticaly add the RDFa markups or that provide a good UI to set and add them without a line of code ?
WYSIWYG
Well you could do this with a microformat add-on for a WYSIWYG like editor (e.g. TinyMCE). Sounds like a fun project for a thesis student...
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I was thinking to map
I was thinking to map directly CCK fields (like adress, name, age fields...) with RDFa or microformat.
But an add-on for a wysiwig editor can be cool also.
Yes of course that would be
Yes of course that would be the best for structured text, but microformats could allow you to add unstructured text that is semantically accessible.
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Microformat for drupal profils
http://drupal.org/project/vcard
Nice module