You could go down the SMS/email gateway route, or use a company like Clickatell to send messages for you (though I don't have any personal experience with them)

You could go down the SMS/email gateway route, or use a company like Clickatell to send messages for you (though I don't have any personal experience with them). But seriously, http://www.google.com/search?&q=sms+site:news.ycombinator.com http://www.google.com/search?&q=sms+site:news.ycombinato...