I read it when my first was an infant and tried it. I hated it and it felt wrong to me. In my opinion babies should be held and they only let us for so long and then they move on. I want to cherish the years that I can hold and rock my baby. On the other hand I have friends who do use it and love it. There kids seem healthy.
I would like to blame my phone for all the typos but in reality the poor thing is just trying to keep up with my crazy thumb typing while holding a baby.