This New York Times article suggests that many of the product reviews in the marketplace are fake.

This New York Times article suggests that many of the product reviews in the marketplace are fake.  The problem seems to be especially prevalent in the market for books.  According to the article, a data-mining expert at the University of Illinois, Chicago,"estimates that about one-third of all consumer reviews on the Internet are fake."


http://www.nytimes.com/2012/08/26/business/book-reviewers-for-hire-meet-a-demand-for-online-raves.html?adxnnl=1&adxnnlx=1380301261-FkvNsI3h7TZgXR6wLG2Vqw&_r=1&