Today I've created my first bona fide mashup using the Yahoo! Maps API and the Twitter API to map my friends' location. Although I've been playing around with many Web 2.0 APIs, this is the first time I've combined any of them in true mashup fashion....
Recently I've discovered a fantastic free service provided by Yahoo! which makes it possible to convert any XML data feed into a JSON data feed. http://pipes.yahoo.com/pipes/ It is easy to create a pipe that provides a JSON data feed with a callback function...