<https://www.kboards.com/threads/why-have-rankings-suddenly-fallen.137364/>
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"Talking to people over the past couple of days it seems that the general experience is that rankings have fallen by around 20%.\n\nDoes anyone have any idea why this would be?\n\nHave thousands of new books suddenly been released?\n\nHave algorithms changed somehow?\n\nAre books in Select being promoted by Amazon more than others?\n\nI think a poll might be useful to try and get to the bottom of why, but I don't know how to set one of those up."
<https://www.kboards.com/threads/why-have-rankings-suddenly-fallen.137364/>