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Two recent examples show how mobile phones can improve peoples' access to information in developing economies. Robert Jensen studied the effect of the growth in mobile phone use in fishing villages in the Indian state of Kerala. As cellular coverage grew from nothing to 100% from 1997 to 2000, the fish market became more efficient: fishermen knew where that days' catch would fetch a good price, price fluctuations between villages diminished, and fewer fish were discarded at the end of each day. A second example shows how markets for agricultural goods -- accessed via phone -- aided farmers in East Africa. The Kenyan Agricultural Commodity Exchange makes nationwide prices available through text messages. Prior to the Exchange, the main source of pricing information was the middleman to whom the farmers were selling -- people who were motivated to buy the commodity as cheaply as possible. Armed with better pricing information, farmers can now sell their goods for prices closer to market rates.

Billions of people have mobile phones but only a small fraction of those people have access to the Web. We are focusing on three main types of services that are widespread on the Web, but are absent in developing regions: classified advertising, social networks, and information sharing through Wikis. In all three service aspects, we seek to provide an intuitive and dynamic infrastructure for user-generated content. Craigslist, in the US, and similar free classified services in other developed countries have created marketplaces for exchanging goods and services where none existed before. Their web-based access cannot be brought to developing countries in the near future. Instead, what if we could assist people in forming similar types of connections using only their mobile phones?

Short-term goals: Focus on one domain: apartment listings. Build a prototype and deploy it for a month in Nairobi for free.

I decided to put together a site, African Signals, where people could leave information on the availability, costs and service levels of mobile phone and internet connections in their country. Right now there is a basic skeleton for every country, but it needs to be updated and improved.

The 2 billion phones being used in the developing world are really great at making and receiving voice calls and text messages: Why not shape the internet experience to meet the specs of every phone's inherent functionality (voice!) rather than requiring devices to have specs that quite frankly aren't going to be realistic for many years to come?

In Kenya there are countless SMS-based applications that provide subscribers with a different mobile web experience: helping people find jobs, keep up to date with sports scores, get weather information, find a date, get information about commodity prices, etc... All content we expect from a mobile web-experience, but now it can be accessed on any phone in Kenya.

Jonathan Ledlie and I are starting to build an audio equivalent to the web that can be accessed from any phone in the world. We're enabling people to make audio homepages where they can record interactive content (in any of Kenya's 1000+ languages) to whomever they wish; telling the family history, listing their CV, anything that the traditional homepage can be used for. But perhaps our most promising audio application is moSoko (soko is marketplace in Swahili) - like Craig's List, but for East Africa and through an audio interface.