Quote:
Originally Posted by Permacultural
Additionally in the pseudo-anonymous nature of the Internet, it is socially safer to post things that would not normally be stated in person. So in addition to the issue of self-selection, there is also negative response bias (The only things worth taking the time to post are the negatives).
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This is not what I have noticed, in reviews of people or goods. People tend to be like me, and post reviews when they are either extremely pleased or displeased. And tend not to post reviews when they have middling opinions. As long as you keep this in mind, there is plenty of good information to be mined from reviews.