Jamie writes: "Mexico's telecom tycoon Carlos Slim has overtaken Bill Gates to become the world's richest person. Mr. Slim is now worth $67.8bn (£33.6bn), above Microsoft founder Mr Gates' $59.2bn, Sentido Comun says. It said Mr. Slim's wealth has rocketed into top place after the recent 27% surge in the share price of his largest company, America Movil. He has a 33% stake in the firm, Latin America's largest mobile phone network."