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"Googler, Dasha, announced in a Google Maps Help thread that they made a major update to their spam algorithms to block spammy reviews in Google Maps.Dasha said that Google \"made some recent improvements to our spam detection algorithms that have increased the number of reviews that appear on some local Google+ pages.\"What changes specifically? She lists a ton of guidelines one can follow to be sure not to trip the spam filters.  The guidelines are:For reviewers:\r\nMake sure you've taken a look at our review content guidelines.\r\nSometimes you may want to review multiple locations of the same business, such as your favorite fast food chain. Just remember to tailor each review to the specific location. Others will want to know what sets that location apart - be it the super friendly drive thru person, or maybe the unexpectedly awesome lake views.\r\nDon't write reviews for your current employer. We don't allow reviews from current owners or employees.\r\nSpam bots use URLs to redirect to other sites or potentially spread malware. We won't show reviews with links, so, don't put URLs in the text of your reviews\r\n\r\nFor business owners:\r\nBe wary of an SEO or reputation management service that promises to generate reviews for your business. We've seen companies make up fake glowing testimonies -- and we'll take them down.\r\nWe don't take down negative reviews for simply being negative for anyone, regardless of any other relationships with Google. Instead, we encourage you to utilize the owner response functionality to respond to the review and address the user's concerns.\r\nIf a third party claims that they know how to remove reviews from Google, don't believe them. Google does not work with any third party reputation management companies and we certainly don't remove reviews unless they violate our guidelines.\r\nDon't set up a computer or tablet device in your place of business for customers to leave reviews on site. Consider sending a reminder e-mail so customers can review on their own time.\r\nRemember, we don't allow you to give customers free gifts or discounts for leaving reviews.\r\n\r\nFor SEOs:\r\nIf a business accepts paper comment cards it might be tempting to collect them and \"digitize\" them by posting the reviews on Google+ Local. We ask that all reviews come from first hand experience and do not allow posting reviews on behalf of others.\r\n\r\nFor everyone:\r\nIf you see a review that violates our policy guidelines, you can report the review to us by clicking on the gray flag icon next to the review in question. You'll be taken to a form where you can tell us why you're flagging that review. Please note that we won't follow up with you individually, but we do review every piece of content that is flagged.This is quiet helpful compared to some of the web search spam algorithm hints and tips we are given.  Don't you agree?Forum discussion at Google Maps Help."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-maps-reviews-algorithm-16299.html>