Black Hat SEO tricks
To monitor a search engine algorithm closely, you need to operate near and over the boundaries that you know. Inevitably, you take the risk of receiving penalties from search engines.
I keep close ties to ex-clients in industries known for their less ethical approaches, just to see what does and doesn't work. Not surprisingly, all the old black hat tricks I used to play keep working.
Making the Wrong Page Rank
Influencing the SERP ranking of one's competitor might be hard. Influencing which page on their domain ranks is much easier. If the wrong page ranks, they're likely to miss a conversion.
This is a trick derived from a specific search engine reputation management (SERM) tactic. Instead of pushing a negative result down, you can replace it by a neutral/positive page on the same domain. This way you don't have to match all the domain related factors before focusing on relevance and page importance.
The new result replaces the old one, thus removing a negative result from the top 10.
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