Hi, thanks for preparing good starter document. I noticed some people in twitter already talking about this tutorial as "the first read", after the Google announcement.
A few minor comments on vocabulary examples: - foaf:img has foaf:Person as its domain and foaf:Image as its range. Hence the relation in "Swapping subject and object" section should be inverse, or better to use foaf:depicts for the example instead. - dtend property of iCalendar is defined to specify "non-inclusive end of the event", so the value of content attribute should be 2009-04-25 rather than 2009-04-24. - the namespace URI of RDFical ".../cal#" is proposed to be deprecated in favor of ".../cal/icaltzd#" (though not determined) [1]. These are not directly related to RDFa syntax introduction, but I expect this document to be a starting point for many people to learn these vocabularies. The correct usage examples would be very beneficial for readers. best regards, [1]http://lists.w3.org/Archives/Public/www-rdf-calendar/2008Dec/0000.html -- @prefix : <http://www.kanzaki.com/ns/sig#> . <> :from [:name "KANZAKI Masahide"; :nick "masaka"; :email "mkanz...@gmail.com"].
