I am new here. So, this discussion is very confusing to me.
We are not talking about Cthulhu existing are we?
I have to point out being a Lovecraft reader that Cthulhu is completely fictional, with no historical cult. Lovecraft's stuff is spooky because he weaves in bits of 'legit' occult stuff now and then (meaning, books/titles/people who actually existed related to the occult). It is not real.
Also, I feel compelled to say that Cthulhu cares nothing for devouring souls but instead wreaks evil and destruction in wanton abandon. If he stepped on you then you were in his path to destroy something more important (referring to the literary monster).
There was a Necronomicon written and published in the late 70's I think, which is either completely fabricated or derived from various historical hermetic sources.
Turn down your earphones a little to not blow out your eardrums and watch this. The secret of bizarre weirdness is the fabrication mixed with historical figures of the occult.
http://www.youtube.com/watch?v=rBSuRB1AhxY