RDFa for telephone, IRC links that open, and other spiffiness for Agaric's client support page

RDFa-ing up our support page.

http://www.w3.org/TR/xhtml-rdfa-primer/

recommends FOAF for most contact stuff, and there is a FOAF:Organization for companies and weird hybrid collective

The tel URI for Telephone Numbers
http://tools.ietf.org/html/rfc3966

Link to IRC
http://oreilly.com/pub/h/2018

http://www.scriptygoddess.com/archives/2007/06/14/make-phone-numbers-clickable-to-dial-on-mobile-phones/

Protocol for links to open in Skype:
http://www.skype.com/intl/en-us/tell-a-friend/get-a-skype-button/

This seems mostly good advice, but why it is using some random vocabulary instead of FOAF is beyond me:
http://www.google.com/support/webmasters/bin/answer.py?hl=en&answer=146861

http://spyrestudios.com/real-world-microformats-rdfa-microformats-and-microdata-practical-examples/

http://xmlns.com/foaf/spec/

See what we're currently using by viewing the source of http://agaric.com/support