sensibleken - 09 November 2009 04:24 AM
Accipiter - 08 November 2009 10:56 PM
Peter - 08 November 2009 10:37 PM
So the author of that web site is saying “I love you” is a Satanic verse?
Charming. 
There are less charming symbols that are similar. If you make that symbol but have your thumb folded down so that it’s just the two fingers, then in Italy or France you’re saying that somebody’s wife is cheating on him. On the other hand, the exact same symbol is also used in the exact same places to ward off bad luck. The sign has the same latter meaning for Hindus, too. But those are all without using the thumb, and also either totally unrelated to or else totally the opposite of any sort of diabolical meaning.
What all the rock stars and the like are making the sign for, I dunno. But any devil-worship meaning added to the symbol is a very recent thing, I believe.
the devil horns thing is attributed to ronnie james dio. i think it existed before him but he certainly popularised it
He learned it from his Italian grandmother
from http://en.wikipedia.org/wiki/Sign_of_the_horns:
R.J. Dio – “I doubt very much if I would be the first one who ever did that. That’s like saying I invented the wheel, I’m sure someone did that at some other point. I think you’d have to say that I made it fashionable. I used it so much and all the time and it had become my trademark until the Britney Spears audience decided to do it as well. So it kind of lost its meaning with that. But it was…I was in Sabbath at the time. It was symbol that I thought was reflective of what that band was supposed to be all about. It’s NOT the devil’s sign like we’re here with the devil. It’s an Italian thing I got from my Grandmother called the “Malocchio”. It’s to ward off the Evil Eye or to give the Evil Eye, depending on which way you do it. It’s just a symbol but it had magical incantations and attitudes to it and I felt it worked very well with Sabbath. So I became very noted for it and then everybody else started to pick up on it and away it went. But I would never say I take credit for being the first to do it. I say because I did it so much that it became the symbol of rock and roll of some kind.”
original article source
So, basically, they’re all calling on “the horned god” (probably deer or goat) to protect them from bad luck. Gorillas do it, too - so maybe it has roots older than anyone’s religion.