It seemed to me that search engines had long since defeated black hat tactics using machine learning and other powerful technologies. Networks of doorways, if they remained, only somewhere on the side of the Internet, in marginal topics such as casinos or adult content.
But recently, I immediately came across a whole bunch of spam sites that collect millions of visitors from Yandex, easily winning quality and reputable projects, even in white niches.

For requests for which the relevance of information is very important, Yandex mixes up-to-date documents into regular search results. This sounds logical, not all sites fall into Yandex News, a recent blogger article about an accident in Penza may be a better answer to a user's question than the old news on a reputable site.
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But there are two strange moments:
- Such answers appear for rather unexpected requests, for which relevance is obviously not measured in hours or days. For example, “recipe for pancakes with kefir” or “homemade pasties”.
- For ranking Yandex uses algorithms that are significantly different from the algorithms of the main issue. For example, it is ignored that the content is non-unique or generated.
Special signs
The first positions on such requests are usually given to pages that have been published in the last few hours. In addition to the document’s age mark to the right of the snippet, these pages are distinguished by the presence in the URL of a saved copy of the src = FT parameter. For example,
http://hghltd.yandex.net/yandbtm?fmode=inject&url=https%3A%2F%2Fzakupka.tv%2Frecipe%2Fchebureki-7764&tld=ru&la=1510220416&tm=1510221945&text=%D0%B4%D0%BE%D0%BC%D0%B0%D1%88%D0%BD%D0%B8%D0%B5%20%D1%87%D0%B5%D0%B1%D1%83%D1%80%D0%B5%D0%BA%D0%B8&l10n=ru&isu=1&dsn=0&sg=vla1-0074.search.yandex.net%3A7301&sh=-1&d=4900&src=FT&mime=html&sign=287713794a48239813318f67a221cb09&keyno=0
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