R1chard - 8:57 am on Jan 19, 2007 (gmt 0)

The main one seems to be

<meta name="ICBM" content="051.5286, -0.0935">

This has been around for a while, and you can also copy/paste the coordinates into the google maps search box... The acronym is to do with ballistic missiles!

Other uses: geourl.org allows you to see what other websites are near your own site... And www.a2b.cc is another one that is similar.

Other tags are:
<meta name="geo.position" content="44.345;-93.712">
<meta property="geo:lat">46.1</meta>
<meta property="geo:long">124</meta>

But I've not tested any of these.

In any case, with most mobile phones now handling proper html web, and with some starting to include GPS/satnav, this is sure to become very big at some point in the next year or two.

[edited by: R1chard at 9:15 am (utc) on Jan. 19, 2007]