Consider a few facts: The Ghana Stock Exchange regularly tops the list of the world's highest-performing stock markets. Botswana, with its A+ credit rating, boasts one of the highest per capita government savings rates in the world, topped only by Singapore and a handful of other fiscally prudent nations. Cell phones are making phenomenal profits on the continent. Brand-name companies like Coca-Cola, GM, Caterpillar and Citibank have invested in Africa for years and are quite bullish on the future.