“There are a lot of applications created for Twitter, so it’s useful for people with smartphones. But it’s also about the ubiquity of the lowest common denominator: SMS. There are over four billion mobile phone accounts in the world, all essentially Twitter-ready. Compare that to only about two billion PCs. So it creates a huge growth opportunity for us. When a farmer in a rural village in a Third World nation can get information over SMS, it can have a dramatic impact on his life. We’ve always been excited about Twitter being able to work over this rudimentary network of SMS as well as the high tech smartphones.”