Yea, I could almost write all the responses here myself.
I have used them. They're the kind of thing you use enough to get your point across and then you discontinue use. If you use them beyond the necessary they can become a bit of a crutch for both riders and horses.
They're not evil by any means. Training devices are frowned on by some people for the wrong reasons. I think the stories of abuse and poor training get amplified in the retelling and it gives some things a bad rep that don't deserve it. I won't lie though, I have seen some kids, especially in 4-H who use them to punish and antagonize their horses and its a sad thing.
Just remember, before you judge, you probably don't know both sides of the story.
And Lane's right. If you want to lower your horses head, you'd probably use a training fork.
BTW, who writes the pop-up descriptions for the orange items?