I'm so relieved to see that the overwhelming majority of moms posting here do not prescribe to the "cry it out" method. I have no doubt a study has shown what most moms already know in their heart. EVERY mom I know who has tried to let thier baby cry without doing ANYTHING to try to make it better for them, suffered themselves every second, longing to respond in some way. It seems to me an urge that strong serves an evolutionary purpose in human survival. Human touch, comfort, and reassurance is as essential for our survival as food, shelter, sleep, etc.
Even if you let them "fuss" for a while, I think it's important to give reassurance that you are there, and that they are going to be ok. YAAAAAYYYY!!! for moms who follow their hearts instead of cutting off and disconnecting themselves.