[uf-discuss] Microformat auto-discovery WAS: Plazes & Microformats

brian suda brian.suda at gmail.com
Wed Apr 19 07:25:38 PDT 2006

We have talked before about auto-discovery of microformatted data[1],
and about describing vcards at the other end of a link. Here is the
notes so far, it hasn't been talked about in awhile, so feel free to
read-up and add your notes.

There is also an article about "Authoritative Metadata"[2] which details
the fallbacks of where the browser/server is first suppose to gather
data about the resources, then where too look next if it fails. This is
important because we can start sticking things in rel="vcard" or
possibly use the 'a' element TYPE attribute[3]. So you could have:

<a href="http://example.org/my.vcf" rel="something here vcard me"
class="something here maybe" type="text/x-vcard">my vcard</a>

This doesn't always work because the TYPE attribute has to describe the
resource, but hCards are embedded in HTML, so you couldn't cite them
directly unless your link was to a web service that transformed the HTML
to a vCard.

I hope this helps the discussion about auto-discovery, because this
could be used across all microformats, hAtom, hReview, hCalendar, etc.


[1] - http://microformats.org/wiki/hcard-brainstorming#Auto-Discovery
[2] - http://www.w3.org/2001/tag/doc/mime-respect.html
[3] - http://www.w3.org/TR/REC-html40/struct/links.html

David Janes -- BlogMatrix wrote:
> That's exactly the idea. Note that we're just discussing this right
> now (literally!) -- it isn't part of any spec at this point. I
> certainly would like to here TC's opinion on this though, of course,
> fortune favors the brave :-)
> Regards, etc...
> Pieter Walsweer wrote:
>> David Janes wrote:
>>> <a class="vcard" rel="vcard" href="/profile/fiahless/"><span
>>> class="fn nickname">fiahless</span></a>
>>> To indicate that not only is this a vcard, but a better or
>>> "reference" vcard is available at the other end of the link.
>> That sound like a good idea, 'cause we're going to use these "short
>> versions" of the hCards on our xfn-enabled friendslist, too. So it
>> would look like this:
>> <ul>
>>   [...]
>>   <li>
>>     <a class="vcard" rel="contact friend vcard"
>> href="http://beta.plazes.com/plaze/cd21e1717f61ba9cf9df9006038da172/">
>>       <span class="fn nickname">fiahless</span>
>>     </a>
>>   </li>
>>   [...]
>> </ul>
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