RDFa in the FAO FNA we site

Dear all,

I am working with RDFa, in order to insert RDFa tags into an FAO web site:
example at
http://www.fao.org/ag/agn/publications/fna/article.jsp?lang=en&myURI=id1583


I am using the firefox plug-ins "Operator" and "Fuzzbot" to check if my RDFa
comes correctly on the final html page.

I have the following comments:

1)  In order to activate the "tagspaces" tab in Operator I need to put the
keyword I am visualizing as a final word in the URL of the related link. But
in fact I would need also to link the same category to a different URL. I
therefore added an empty link with the RDFa tags... Is not elegant but
works... (see example below). If the rel="category tag" would actually use
the title tag to get the label for the operator menu would be better (but
this is up to the operator developers I think).

<ul>
<li>
<a href="http://www.fao.org/category/DIFFUSION OF INFORMATION"
title="DIFFUSION OF INFORMATION" rel="category tag" >
&nbsp;
</a>
<a href="browse.jsp?lang=en&myURI=id1591">
DIFFUSION OF INFORMATION
</a>
</li>
<li>
<a href="http://www.fao.org/category/DISEASE CONTROL"  title="DISEASE
CONTROL" rel="category tag" >
&nbsp;
</a>
<a href="browse.jsp?lang=en&myURI=id541">
DISEASE CONTROL
</a>
</li>
<li>
<a href="http://www.fao.org/category/MALNUTRITION"  title="MALNUTRITION"
rel="category tag" >
&nbsp;
</a>
<a href="browse.jsp?lang=en&myURI=id2083">
MALNUTRITION
</a>
</li>
</ul>

2) I could activate the "contacts" tab in Operator using this:

<div about="#Ba Touré, R."  typeof="foaf:Person" instanceof="foaf:Person" >
<span datatype="" property="foaf:name">
<div class="QuestionBlogMain hentry vcard">
<a class="url fn"  rel="foaf:workplaceHomepage"
href="browse.jsp?lang=en&myURI=id1264">
Ba Touré, R.
</a>
</div>
</span>
</div>

3) I could not activate the tabs in Operator: events, locations,
Bookmarks.... do you know any example of pages implementing this?

4) I could see in Fuzzbot the rdf:triples in a test file, but strangely not
in the online file... Maybe too big?

5) The Fuzzbot plug-in create a problem in my firefox v. 2.0.0.14:  if I have
2 tabs, and in one tab I load the URL
http://www-data.fao.org/aims/aos/aos.owl,   when I witch tabs and return to
this URL firefox crashes.

Hope this helps.

Regards
Margherita