Pacifiers in and of themselves are not evil, they are simply another tool that can be used in parenting. Like any other tool, they can be abused.... if it is shoved into a baby's mouth constantly instead of the breast being offered it can cause problems.
In response to Angela- my 2nd child never had a pacifier and never missed it. He just nursed and did comfort nursing. I almost became uppity about pacifier usage and how they shouldn't be used at all and the types of moms who use them and how non-AP they are..... and then my 3rd kiddo was born. I now have an overactive letdown and LOTS of milk. She only wants to nurse to eat and does not want to comfort suckle at all, not one bit. She wants fingers and so finally we tried a pacifier. She is happy, we are happy, she is still gaining weight and nursing very well. I always am sure to offer her the breast first, it is only when she refuses my breast that I give her the pacifier. She has such a high need to suck that she has something in her mouth 24 hours a day, she just never ever stops wanting to suck (totally not exagerating here either and there is just no way that a mom can keep up with 24 hours of a breast in babies mouth).