Tinybeans is amazing! I was recommended it by a friend and now my whole family is using it
It is an app that allows you to share photos of your baby with family and friends privately (for those of us not wanting to post/flood facebook with pics of your adorable new addition) It's super easy to use, it even sorts photos into a calendar and allows comments and likes. My family all live interstate and don't all have facebook so it is perfect, they get a little notification when any one of us posts a pic of our new baby
I can't recommend it highly enough!