Pretty stupid move as companies could actually use this knowledge of consumer behavior to adjust their pricing and increase their profitability. See Bakos, Bry

Pretty stupid move as companies could actually use this knowledge of consumer behavior to adjust their pricing and increase their profitability. See Bakos, Brynjolfsson and Lichtman (1998) http://digital.mit.edu/erik/sig.pdf http://digital.mit.edu/erik/sig.pdf and Varian (1994) http://people.ischool.berkeley.edu/~hal/Papers/sharing.pdf http://people.ischool.berkeley.edu/~hal/Papers/sharing.pdf