A few comments: 1. "version" is listed twice 2. "name" should reuse either "fn" from hCard or "summary" from hCalendar 3. "uri" should reuse "url" from hCard 4. Could pluralities be included (i.e. which properties are singular?) -- Toby A Inkster <mailto:mail at tobyinkster.co.uk> <http://tobyinkster.co.uk>