Mashups are one of the tools used by Wepoco to deliver weather forecasts to farmers in developing countries.
How mashups are used
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Interesting examples
Now we're talking http://googlemapsmania.blogspot.com/2008/03/google-maps-voice-map-now-were-talking.html How about using this technique to solicit, record, and deliver spoken forecasts in local languages? How? By generating forecasts automatically for specified locations and then paying members to record them for replay via phone or local radio.