The World Bank designed this enormous database on economically developing countries for two groups: researchers seeking data to analyze and businesses looking to understand or expand their marketshare. For the rest of us, it’s just fascinating reading. Start with the short article on the homepage, which explains that the roughly 4.5 billion low-income people in the world collectively spend about $5 trillion a year - more than the middle and higher income segments combined. Then, explore the two Dashboards. The first feeds back information by country, the second by sector (Food and Beverages, Clothing and Footwear, Housing, etc.). For instance, Albania, with a total population of 2.8 million, saw a 7.6% dip in household spending in 2012, with the lowest segment forking over about $60 million for Food and Beverages, while the higher segment spent $265 million on the same category.