We are not shy and are rarely short of an opinion. We'd love to share our thoughts on global warming, Manchester United, deforestation in Borneo, Obama's healthcare plan, the role of women in the Sudan, microcredit, this year's winners of the Nobel Peace Prize, Dubai's financial crisis, and Sarkozy's latest policy ideas. But we won't. We will confine our remarks to one subject, the one we get paid to talk about; how to build valuable international brands