David Leonhardt

Denny Hatch is the author of six books on marketing and four novels, and is a direct marketing writer, designer and consultant. His latest book is “Write Everything Right!” Visit him at dennyhatch.com.

Peter J. Rosenwald is an expat American living and working in Brazil; founder and first CEO of Wunderman Worldwide, International Division of Wunderman agency) and first chairman of Saatchi & Saatchi Direct Worldwide; strategist and senior executive in charge of building subscription and data-driven marketing for Editora Abril, Latin America's leading magazine publisher; founder of Consult Partners, active strategic marketing consultancy working in Brazil, U.S. and U.K. International keynote speaker on data-driven marketing and author of "Accountable Marketing" (Thomson), "Profiting From the Magic of Marketing Metrics" (Direct Marketing IQ), and "GringoView" blog author for Brazilian Huffington Post. With an international perspective, my blog's purpose is to share my maverick views of this business I've spent the last half-century working in, enjoying and observing.

The storm raging around Facebook and the supposedly unauthorized use of data from 87 million members of its digital community by the British firm, Cambridge Analytica, is hardly surprising. That this data, scraped from Facebook’s files, was used to support Donald Trump’s election campaign just adds thunder and lightning and moves us one step closer to Big Brother not only watching us, but influencing our lives.

By David Garfinkel As the world’s richest investor (and second-richest person after Bill Gates), Warren Buffett attracts a lot of attention for his stock-market savvy. Unfortunately, most people in business do not have the time, the skill or the money to follow in his financial footsteps. But just about anyone could learn and profit from Buffett’s business skills and philosophy. He’s unusually open about how he runs his business and lives his life. Buffett’s business philosophy and his own persona have been achieved by his adherence to five not-so-secret secrets. Secret #1: Know your strengths and weaknesses; admit your likes and dislikes. “I was wired at birth to

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