I think Ben will end up being the lesser of two evils (the bigger evil being Abbadon/Widmore/Hanso), which is why Sayid will end up working for him. I don't think we could ever have Ben be 100% good, and actually it's the amibiguities in this show that I both love and am driven insane over.

What do you think of the absence of the cabin? At first I thought, well maybe Hurley wished it away. But, maybe Jacob is hiding from smartass Ghostbuster dude. That guy is shady, but he does seem to really be able to commune w/spirits.