Last year, they didn't boot anyone during Idol Gives Back week. I think they just accumulated the vote totals between that week and the next week to determine the contestant headed home.
However, if they do decide to axe someone this week, Carly and Carly's Stupid Tattoo are definitely the top candidates. This theme was in Brooke's sweet spot, and she delivered a pimp-spot worthy performance. Jason's performance was interesting, Kristy looked fantastic and actually sang well (!), and Michael had the best song ("Dream On") of the lot. We all know the Davids aren't leaving anytime soon.
Going home this week: No one.
Going home next week: Carly, Carly's Stupid Tattoo, or Syesha.