[microformats-discuss] Visible metadata
rbach at rbach.priv.at
Sun Jul 24 18:03:54 PDT 2005
Ryan King wrote:
> As many have noticed, the <abbr> for date/time gets reused alot...so,
> I think it could stand to be refactored out into its own elemental
> microformat. What do you think?
I think every date/time on the web should be expressed using
There is a great benefit because authors can use their favorite
date notation and users which are used to other conventions
could still understand them.
AFAIK in the US a common date/time format is MM/DD/YYYY hh:mm
(with 12 hours and am/pm)
In Austria a common format is DD.MM.YYYY hh:mm (with 24 hours)
So if I read "02/07/2005 11:30 pm" I have to engage my brain:
But with <abbr title="2004-02-07T22:30">02/07/2005 11:30 pm</abbr>, I
simply move the mouse cursor over it and my browser will display the
date in an unambiguous notation.
(Note: I intentionally used the long notation with dashes because it's
easier to read. I strongly recommend this to everybody, because title
attributes are not only for machines but for humans too)
But perhaps we could go even one step further.
extends the mouse over
tool tip from
Regional notation #1: 7.2.2004 22:30
Regional notation #2: 7. Februar 2004 22:30
Ryan, you once pointed me to http://www.cl.cam.ac.uk/~mgk25/iso-time.html
and I learned that ISO8601 even allows you to specify your time zone, so
a plugin could even translate the time provided to the user's regional
>> The author(s) of a page could be denoted with
>> <span class="author">John Doe</span> and
>> <span class="author">Winston Smith</span>
>> <a href="http://example.org/~jd" class="author">John Doe</a> and
>> <a href="http://example.org/~ws" class="author">Winston Smith</a>
> Take a look at <address> and hcard again and make sure it can't
> supply your needs.
Thanks Ryan, you brought me on the right way.
I already thought about <address> and I thought about hCard but
I didn't think about address _and_ hCard(s) ;-).
<span class="fn">John Doe</span> and
<span class="fn">Winston Smith</span>
<a class="url fn"
<a class="url fn"
Relationship rel="alternate" was added because http://example.org/~jd
and http://example.org/~ws should both contain hCards which provide
more contact details (email, phone, etc.).
One general note on hCard:
Parser could make the following assertion: If the container element
of a hCard is an inline element (e.g: <span>) and contains an <a>
element with class "url" and rel="alternate" _perhaps_ the page pointed
to by href contains the "full" version of the Person's hCard.
>> <p class="summary">...</p>
>> one could mark the summary, so that robots can extract it instead of
>> the description meta tag.
> I'm not sure about this.
> Do people use this meta tag?
Some people use it.
Goggle displays the contents of this meta tag in search results.
I've searched for "homepage" on http://www.google.com/search?q=homepage
The second result is "BBC - bbc.co.uk homepage - Home of the BBC on the
The text displayed below ("bbc.co.uk offers a varied range of sites
including news, sport, community, education, children's,
and lifestyle sites, with TV programme support, ...") comes from
the description meta tag.
> And do they publish the same content in html?
(I suppose you mean inside of <body> ...)
At least Jakob Nielsen does it with his articles on useit.com and
I guess others do it too. I'll write more on this topic later, when I
know more about the existing practice.
Robert Bachmann <rbach at rbach.priv.at> (OpenPGP KeyID: 0x4A5CCF10)
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