This may have been answered already, but whatever became of the rock structure that looked like a window? And I bring this up because I remembered (randomly) that in season 2 when Sayid & co. were on the boat on their way to the Others fake camp, they were near that thing. And thats also when they saw the statue. So the Other's fake camp is pretty close to Jacob. Maybe the fake camp was the original Others camp when Jacob was actually with them back in the day. And also that window thing is there. Maybe that was the original portal or something that brought Him to the island? It probably plays a bigger part than we think, all I'm saying is that thing is really close to where Jacob lives, its probably a big deal.