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There was a time, about 5 years ago, when I assumed that microformats were the way to go and spent a bit of time looking at hCalendar for representing iCalendar-formatted event information. http://microformats.org/wiki/hcalendar Not long after that, there was a lot of talk about RDF and RDFa for this same purpose. Now I was confused as to whether to change my strategy or not, but RDF Calendar seemed to be a good idea. The latter also was nice because it could be used to syndicate event information via RSS. http://pemberton-vandf.blogspot.com/2008/06/how-to-do-hcalendar-in-rdfa.html http://www.w3.org/TR/rdfcal/ These days it seems to be all about HTML5 microdata, especially because of Rich Snippets and Google's support for this approach. http://html5doctor.com/microdata/#microdata-action All three approaches allow you to embed iCalendar formatted event information on a web page. All three of them do it differently. I'm even more confused now than I was 5 years ago. This should not be this hard, yet there is still no definitive way to deploy this information and preserve the semantics of the event information. Part of this may be because the iCalendar format, although widely used, is itself insufficient. Tom