Webmonkey just published a great tutorial to help you get started with a simple request/response SMS text messaging app powered by TextMarks. Their example app lets you find out sunrise/sunset times for any location by simply texting e.g. “sunrise portland or” to 41411.
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TextMarks user Jesse Andrews saw this tutorial, and in only 14 minutes built his own app to lookup ISBN numbers by SMS! Read about his experience:
Google, Amazon, and TextMark (and web.py) have made building an SMS app trivial and fun. Also the user experience is much nicer than with Twitter. Users of my twitter bots have to: 1) follow the bot, 2) private messages d amazon [ISNB].