FrontlineSMS open source mobile campaigning tool
Just discovered this rather cool open source tool for sending and receiving SMS messages. All it costs you is the the price of the texts you send so if you can get a contract with unlimited (or 1000s of inclusive) texts then it could become a very cheap communication tool. You can set up keywords for petitions, competitions and campaigns etc so that texts sent to you are quickly organised and can be output for further campaigning and/or advocacy activities.
www.frontlinesms.com is the place to go to find out more and generally be in awe of the niceness of the people who made this.
I'm going to see if I can try it out with ZARAN here in Zambia for some of our advocacy and education programmes.