The US government makes an enormous amount of data available for free as downloadable XML files and through Web based APIs .  There’s a comprehensive listing of government data sources and tips for using them at usgovxml.com. Many of these data sources could easily be turned into useful web and mobile web services. USGovXML.com  has created a collection of sample mobile mashups using a small subset of the available US government data services at  usgovxml.com/mobile. There’s a huge amount of … Continue reading →