Programmableweb defines a mashup as follows:
“A web mashup is a web page or application that combines data from two or more external online sources. The external sources are typically other web sites and their data may be obtained by the mashup developer in various ways including, but not limited to: APIs, XML feeds, and screen-scraping.”
Mashups are the rage right now in many ways thanks to Google Maps and a couple of other companies that provide data feeds to web programmers. Some current popular mashups at ProgrammableWeb’s Mashup Dashboard include MapGasPrices.com (compare gas prices at local gas stations using Google Map), Freak Streets (odd street names), and Weather Bonk (rich weather map with forecasts and web cams.
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