Cool discussion on the geowanking list (Geowanking Digest, Vol 23, Issue 21) about geo-tagging blogs:
The basic idea is to insert structured strings (geo:lat=*, geo:long=*)
within whatever fields are available, and then build maps and scrapers
to extract location.
When it catches on, it’s sure to get their attention. This has already
happened with flickr, 80K+ geotagged flickr images. Mostly due to
clever greasemonkey integration.
At some point, there will be a critical mass of geo-tagged content that will make the mobile LBS experience pretty incredible.