For instance, one algorithm can be used to display a letter on the search results page.Therefore, we believe that counting the exact number of algorithms that Google uses is not something that is really useful [for optimizers].It is important to remember that rejecting links can lead to a decrease in resource positions in the global search results, since many webmasters often reject links that actually help the website, rather than doing any harm to it.Therefore, referential audits are needed if there were any violations in the history of the resource.Oct 08/2017 Google employee named John Mueller stated that the search team does not check all spam reports manually during the last video conference with webmasters.The question to Mueller was the following: "Some time ago we sent a report on a spam, but still have not seen any changes. " The answer was: No, we do not check all spam reports manually.
According to Gary Illyes, auditing of links is not necessary for all websites at the present moment.
At the same time, he noted that small reports about violations of one page scale are less prioritized for Google.
But when this information can be applied to a number of pages, these reports become more valuable and are prior to be checked.
It should be recalled that in 2016, Google received about 35 thousand messages about spam from users every month.
About 65% of all the reports led to manual sanctions.