@SailorJerry - I admit, I use them for my kids. I don't really know how safe they are, to be honest with you. I keep hearing about how crib bumpers are so bad they should be banned, but I haven't heard much about the paci straps.
I always said I wasn't even going to use a pacifier. And then it was three o'clock in the morning, and my new baby was howling, and those baby shower present pacifiers were in the kitchen, and I got one out! And it helped, and that was that.
The straps keep them from dropping the paci out of their crib, which is important if you are sleep-training. They're also really good for going to the store because they keep baby from dropping the paci right on the floor. There's nothing worse than a crying baby and a dirty pacifier!