fitsquare sends users real-time messages in order to encourage them to check in to healthy venues on foursquare. They can also earn exclusive badges, compete against friends and track progress. Plus it's completely free to participate!
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flightwise (formerly fboweb.com)
Vermont Jobs Site
Tour de Sound
Tutorial for a IP to geolocation aggregator script
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Twitter powered Youtube subtitles
jQuery Twitter API
Building a sentiment analyser for your Twitter feed
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Executive Editor, ProgrammableWeb. Author, Map Scripting 101. Lover, APIs.