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Underlying the wave of unrest across North Africa and the Middle East is the fact that some of the cries for democracy are coming from mouths in need of food. Media outlets around the world were quick to make the link between food and the protests in Egypt, Tunisia and Algeria, pointing to one specific grain: wheat. Egypt is the largest importer of wheat in the world, with Algeria not far behind.

Last week, I spent a pleasant hour over lunch talking to my 60-year-old aunt and her 80-something husband about "this Twitter thing" and how one defines a blog. They had heard that social media had played a role in the protests in Egypt and wanted to learn more. Good students, they nodded and asked questions as I showed them the screens and tools on my computer in a restaurant chosen mostly because it had wi-fi