Rising numbers of mainland Chinese tourists are coming to Hong Kong to buy books that are banned in their own cities. Money Magazine went on the trail of what publishers might call 'Taboo Tomes and the Dissident Dollar.' Is it a new lifeline for the small, independent bookstore we all know and love? China's population is growing smarter. But are there enough bright young things in the education pipeline to power the country's future? Of the 1-million plus Chinese students who went overseas to study last year, only a quarter of them came home to start their careers. Has China's future brain trust sprung a leak?