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  1. Can Google Correlate Be Used as a PPC Tool?

    This ugly piece of non-scientific theory still rears its head today. If you have a theory that searches for sunblock vary a lot with the temperature, why not test that? In this case each unit being 1 standard deviation shows you that although the...

  2. Matt Cutts, Social Signals, Author Authority, Ranking Factors & Google Realtime

    Reading between the lines, however, there is little said to corroborate that theory in Cutt's announcement. SEOmoz also put the theory to the test, albeit informally, but unfortunately it does not specifically test the 'author signal' and instead...