THE World Bank is warning of the real danger of a massive economic downturn across the world. In a recent analysis it warned that many countries – including those in sub-Saharan Africa – will be facing economic challenges due to rising food and fuel prices. At the same time, however, there is unshakeable optimism around the growth potential of African economies as a whole and specifically the digital economy. The rapid rise of tech hubs and startups in urban areas in sub-Saharan Africa in recent years seems to support that. Many observers have, therefore, identified the digital economy as an…