Who do you use for keyword research?

Discussion in 'BlackHat Lounge' started by collegeguys4, Apr 10, 2016.

  1. collegeguys4

    collegeguys4 Junior Member

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    I came across a comment on a post the other day on here and I thought I had saved it.

    But I cannot seem to find it.

    Someone had mentioned three people on BHW they used for keyword research. One being very expensive but very good.

    Who do you use and consider very good?