Harriet Klausner

To her critics, Klausner said only "Get a life", in a 2012 New York Times interview. "Read a book."

She was the #1 "top reviewer" on Amazon.com until October 24, 2008, when the company began a new ranking system. The new system ranked reviewers according to how many readers found their reviews helpful. At the time of her death in 2015, she was ranked No. 2,447. Amazon kept her at No. 1 in its reviewer "Hall of Fame", a symbolic nod to her contributions.

Klausner professed in her online profiles to read two books a day, but a 2007 profile of her in Time reported that she read four to six books per day. This article named Klausner in its top 15 list of the "web generation's movers and shakers". In an interview published in The Wall Street Journal in 2005, she stated that her goal for reviewing was to bring attention to "lesser-known" authors who "don't have a publicity machine behind them. That's the whole purpose of my doing this on Amazon". She read mostly romance, thrillers and science fiction.

In 2007, a group of reviewers who were critical of Klausner set up the cynically named "Harriet Klausner Appreciation Society", an online forum to monitor her reviews. They encouraged mocking responses to her reviews and offered cash rewards to anyone who could best mimic her style of reviewing.

Harriet Klausner (May 20, 1952 – October 15, 2015) was an amateur reviewer of books and a newspaper columnist. She was the #1 ranked reviewer on Amazon.com for many years, and at the time of her death held the No. 1 spot in Amazon's reviewer "Hall of Fame".