Lost Rumormongering

I try to avoid spoilers for my favorite shows. The word itself reveals why: the very nature of spoilers is to totally fuck up your potential enjoyment of an episode's various twists and turns. But the Internets are such that it is incredibly easy, and tempting, to spoil oneself. I like visiting Dark UFO for its intense dorkifications, like screengrabs of the mysterious Jacob from last week's Lost, but it also has a spoiler page that I find myself increasingly compelled to click on. I like to read Aint It Cool News's little teasers for episodes, but mostly because the ensuing insane fanboy talkbacks are hilarious. Alas, some dude named Lostfan108 (OK, buddy) posted spoilers all over the most recent talkback, several of which I glimpsed from between my fingers (yeah, I like to read websites half-blind.)

I understand how infuriating it can be to get spoiled without your consent. I once had a LiveJournal buddy who put a post behind a cut that read "I just found out I was adopted." Eager to get my Schadenfreude on by reading about someone else's family's dysfunctionality, I clicked the link. Behind which he had written "SNAPE KILLS DUMBLEDORE" in caps like a million times. Now that called for an INSTANT DE-FRIENDING!

All this is to say, I'd love to hear some predictions for the last two episodes of this season of Lost, but that entails some airing of rumors and a confirmed spoiler or two. Caveat lector!

Qs for commenters, should you exist (and ideally will speculate on these q's, rather than answer definitively):

1) Which five characters will die?
2) Does Locke's Bad Dad count as one of the five?
3) What makes Jack's upcoming flashback so "dark"? Personally, I am hoping that the darkness means Jack commits suicide in flashback, and, to quote Douglas Adams, promptly vanishes in a puff of logic.
4) Is Locke dead?
5) Who is the returning cast member? Is he/she there to stay?
6) Will Eyeliner Guy make an appearance? He's hot.
7) Any other predictions?