Dude, I thought I was crazy
I knew it, the whole time. Well, almost. I knew those whispers wern't the others because they were always far away from the Lost crew. They only sent out a few guys to check up on the survivors. I find it hard to believe that Danny, Tom and Juliette were running around the island and whispering, just knowing that they could never be found or caught. I believe you have a good point there.
"That thing in the woods, It could be a monster, or just a really pissed of giraffe, I don't know" -Hurley