extensive market surveys revealed that "the most likely customer for a book on any given topic was someone who had bought a similar book within the preceding eighteen months."Science & Technology at Scientific American.com: SHAM Scam -- The Self-Help and Actualization Movement has become an $8.5-billion-a-year business. Does it work?
Very readable take on the SHAM (Self-Help and Actualization Movement) scam, where speakers like Tony Robbins and Mark Hansen (of Chicken Soup fame) sell the same drivel over and over, making themselves rich at others expense. Some pretty funny stuff, and some sad stuff too.