Since Robbie destroyed my last thread then I'll make a new one.
I already think that Claire was Nicole and judging by how shady Juliet is, it reminds me a lot like Lacey. Who knows.
Widmore acts so childish so I'm betting its between JB or RTF. I think Kate might be Jessica because she said "i died" during a PM and thats Jessica's thing.
I won't really know until the end.