Topical SEO

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Go to Amazon.com and do a search for the keyword you are researching.

On the results that come up, click on any book that has “Search Inside” wrapped around its image.

Scroll down and look at the “Inside this Book” section.

There may be keyphrases or SIPs that are worth exploring further.

Amazon.com’s Statistically Improbable Phrases, or “SIPs”, are the most distinctive phrases in the text of books in the Search Inside!™ program. To identify SIPs, our computers scan the text of all books in the Search Inside! program. If they find a phrase that occurs a large number of times in a particular book relative to all Search Inside! books, that phrase is a SIP in that book.

SIPs are not necessarily improbable within a particular book, but they are improbable relative to all books in Search Inside!. For example, most SIPs for a book on taxes are tax related. But because we display SIPs in order of their improbability score, the first SIPs will be on tax topics that this book mentions more often than other tax books. For works of fiction, SIPs tend to be distinctive word combinations that often hint at important plot elements.

Stemmed keywords are obtained by taking a keyword and then deriving different
variations of that word to create words that mean the same thing and can be
interchanged with your keyword.

For example to stem the keyword “building muscle” you would come up with the
following words:

• Build muscle
• Muscle building
• Muscle build
• Builds muscle
• Builds muscles

Each of the stems can be swapped with the stemmed word “building muscle”.
They are synonyms. Whenever you run across stems of the themes you are
investigating be sure to grab them.

You may also see stemming termed as keyword derivatives or derivatives.