I think the typical bone headed trainer who knows nothing about training IS all too common. I don't mean any disrespect to those who know their stuff. For example, Nate said he trains, and by his posts, he knows what he is talking about. BUT, it just so happens he put his time under the bar and has made progress in himself and he happened to also get certified and make it 'official'.....I think a good trainer like this is a good trainer because of their experience, not some certification course. People can send away for a packet and memorize some shit and get that peice of paper, but I have seen first hand that it doesn't necessarily mean they know anything about training.
I never subscribe to the mindset that if someone is bigger and stronger than another that they know more.....BUT experience does count in my book, and if someone has never proven their methods on themselves, I don't have the same respect for them as I would someone who has practiced what they preached with results......They don't have to be the strongest guy in the world, but these trainers who are either 140lbs or are fat asses don't really represent themselves well.
Also, regardless of anything, when I see a trainer say squatting ATF is 'bad for your knees' or deadlifting is 'dangerous' or when I see a trainer put someone on a Smith Machine because it is 'safer', and this trainer obviously has never squatted a weight that was heavy for THEM or deadlifted a weight that was heavy for THEM, I will go ahead and form the opinion that they are an asshole.
A person doesn't have to move what I consider to be big weights to earn my respect, but they have to move weights that are big for THEM......I am more impressed with the guy busting his nuts to squat 200lbs for 5 ass to the floor reps than I am with some asswipe moving a half an inch with 500lbs...Now not everybody's goals are centered to lifting heavy weights, but I feel anybody in the gym for whatever reason should be there to better themselves and work hard at whatever they do......Also, I think it is fair enough to feel that somebody is an asshole when they criticize squats as dangerous when they have never strained under a squat bar in their life.