Those that write the gun rag pages
Make it up, but pose as sages
Those who think that it's all true
Pay the bills to print more poo

Even worse are the reviews
Pay for adds is pay'n dues
If per chance you didn't pay
It ain't so good what we will say

Clark Magnuson July 2, 2006, 1:27 p.m. with nothing better to do

source in 2006 at rec.guns

The poem [sans discussion & gunwriter jokes] got picked up here:
http://www.thegunzone.com/gunwriter.html