So in the promo clip for this episode, ABC promised us that the "answers to 3 of Lost's biggest mysteries are finally revealed"

Are we to assume those "big" mysteries were:
1. are the kids alive?
2. is Cindy alive?
3. what's up with Jack's tattoos?

because that's all they really told us; to me a bigger mystery is why they took the kids and Cindy, and why Cindy is working with them (and to say "to give them a better life" is not a good enough answer) I assumed they were alive, so this episode didn't tell me anything. And don't get me started on the tattoos...I'm not sure there's a plot line I care less about than his tattoos...

Thoughts? Can someone please tell me I missed something?