How does Keyword-finder work?

Keyword-finder uses your term to search the web, extract the relevant keywords from the 50 most successful pages returned and sorts them by frequency. This give your a idea about good keywords to use in your pages, using correct keywords you make more money look the example .
adsense example

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Top searches in google ( updated every hour )

Mike Nichols, Obama, Raiders, Ty Herndon, Mockingjay, Michael Phelps, Lyle Alzado, Obama speech, FSU shooting, Pitch Perfect 2, Chris Hemsworth, Kylie Jenner, test, Cinderella, Natalie Morales, League of Legends, Buffalo Bills, Miss Honduras, Maria Jose Alvarado, Bill Cosby