// flatMap magic!
scala> myList
res1: List[Option[Int]] = List(Some(1), Some(2), None, Some(3))

scala> myList.flatMap(x=>x)
res1: List[Int] = List(1, 2, 3)

// Applied magic:

scala> def addThree(toadd : Option[Int]) : Option[Int] = toadd.map(_+3)
addThree: (toadd: Option[Int])Option[Int]

scala> myList.flatMap(addThree)
res1: List[Int] = List(4, 5, 6)