i dunno, aside from the lots of air time a person gets in the ep where/he she gets the boot, someone eventually gets voted off when the show reveal some of his/her more humane side/true personality/change in character in that ep:cases in point:
ramona: lazy at first, the episode she gets voted off she tried to make it up... and there was this crying with jenna.
robb: well he was awakened from his experience in tarutao...obnoxious, rude and irritating at first, he tries to make it up during his last episode... again he cries and has heart to heart talk with the SJ tribe.
stephanie: again, tries to make up for her loner existence.
frank (s3): when it was time for him to go...you see him immatating an elephant and after that talking about his personal beliefs and opinions about some "outside world" issues.
there are still others which i can hardly recall, but i also noticed this on other reality-vote-someone-off-to-win-lots-of-money shows.
anyone noticed this trend too?