GeoTagging , sometimes referred to as Geocoding , is the process of adding geographical identification metadata to various media such as websites, RSS feeds, or images. This data usually consists of latitude and longitude coordinates , though it can also include altitude and place names.
Geocoding also refers to the process of taking non-coordinate based geographical identifiers, such as a postal address, and converting them into geographic coordinates .
Also Source: ibid
GeoTagging can help users find a wide variety of location-specific information. For instance, one can find images taken near a given location by entering a latitude and longtitude into a GeoTagging-enabled image search engine. GeoTagging-enabled information services can also potentially be used to find news, websites, or other resources.
Why Geotag? Source: ibid
geo:lat= latitude e.g. geo:lat=51.4989
geo:lon= longitude e.g. geo:lon=-0.1786
where latitude and longitude are the geographic coordinates of a particular location. These are expressed in decimal degrees in the WGS84 coordinate system, which has become something of a default coordinate system with the advent of GPS .
At Taiwan, we can use TWD 97
How to Geotag?
Just type it by using Google Earth , Google Map , PaPaGo or Urmap .
Or use real map.
Do it Directly!
Steeev’s Greasemonkey scripts
UrMap Plus (Please docheck Geotagging Flickr in UrMap )
Geotagging with Google Earth
Definitely, you need to use Firefox + Greasemonkey!
Geobloggers GMiF - Google Maps in Flickr Steeev's Geotagging scripts GeoTagging Flickr Forum Firefox Greasemonkey Google Maps Google Earth 製作一個屬於自己的旅遊地圖 (use geobloggers )