Introducing pacifier to a newborn. Yay or nay?

My friend decided to use it for her baby after she read that it may help in decreasing the risk of SIDS. However, she tries to limit the use because she is worried that she will have a hard time weaning her girl off it if she becomes too reliant on it. For now, she only gives it to her baby during sleep time and when she is really too busy to comfort her (such as when she is driving). It does offer a good break because her girl really enjoys suckling for comfort.