But I see another tendency's, and that is for example people pushing Canon as a better choice then MFDB. Very often users with little registered info about them selves, showing up with tests or reviews, or bold statements about Canon being equal in IQ compared to MFDB.
It's the great age of the internet, where everyone can become an expert from the comfort of their own armchair, despite knowing nowt about nowt. Why let lack of knowledge get in the way of an opinion. Truth is the enemy of creativity. (An exaggeration but not without truth.)
Incidentally, I do know first hand that behind the scenes marketing wonks from big name companies try to influence 'respected' forum posters. Then again, they have always had big name photographers using their gear, for free, or for payment. Caveat emptor.