Survivor Picks!

I got on a Survivor mailing list, hoping to garner some insight so that I could start picking more accurately. Read what they said:

-- Matthew makes an incredible sacrifice so that others can be given the opportunity of a lifetime. But the newfound respect Matthew enjoys makes Rob rethink his new alliance.

-- Still stung by Rob's betrayal of the alliance, an enraged Jenna tells the entire tribe about Rob's secret plans, revealing his strategies to everyone. Will Jenna's revelations turn the tribe against Rob?

-- Feeling ostracized and betrayed, Jenna and Heidi refuse to help out around camp. Will this put the final nails in their coffins?

1. I wonder what Matthew sacrificed? He strikes me as a masochistic type, maybe he gave up a foot or a hand.
2. Jenna's got some nerve bitching about loyalty, but Rob has been a conniving little weasel and even Jenna would be credible delivering that news.
3. Jenna and Heidi have NEVER helped out around camp. Why start now?

If this crowd is smart, they will oust Rob next. After that, Jenna and Heidi will be picked off one by one. I think Jenna deserves the boot first, then Heidi.
But Rob's gotta go. I pick him to be the next one voted off.
Who do you pick?