Varg Vikernes has some interesting things to say about some media manipulations of metal in his criticisms of the book "Lords Of Chaos: The Bloody Rise Of The Satanic Metal Underground" by M. Moynihan & D. Søderlind.
"It is as irrelevant as it would be to talk about The Church of Satan as a source of inspiration in context with the Black Metal underground of 1991 and 1992. But of course, they do that too! I am even accused of having read La Vey's "Satanic Bible"."
"suspicious that the authors "forget" to tell or fail to find out that Aarseth, I and everybody else in the Norwegian Black Metal scene in 1991 and 1992 despised both Crowley and La Vey and everything they stood for!"
"So contrary to what the authors claim, with the possible exception of Aarseth, not a single soul took Venom seriously, not a single soul was influenced by Venom, not a single soul even liked Venom - and that includes Hellhammer of Mayhem too (Necrobutcher wasn't a part of the scene at the time, as he had a break from playing music). Still they keep nagging about Venom throughout the book, and list them as some sort of origin to the whole movement and the ideas it was built upon."
"The authors have managed to fill the heads of a generation of metal fans with lies. What could have been a righteous revolt has been made into some pathetic, embarrassing, brain-dead, impotent and traditional poser-culture best exemplified by bands like Dimmu Borgir - and indeed Venom!"
http://www.burzum.org/eng/library/lords_of_chaos_review.shtml
I also found a very long article about "false metal" that is relevant and makes some appropriate points.
(Infoterror should comment as he is far more qualfied in the subject than I am.)