What do you think about people who post revealing pics?

I know this girl who recently started posting pics of herself in just her underwear in really provocative poses that just keep getting more extreme by the day. Now I'm all for female empowerment, and if that's what makes her feel good about herself then go for it, but why share it for the whole world to see? She has young cousins on her page that are looking up to her. She's also in school, and what if a professor or potential employer came across these. And yes, her page is public. What do you guys think about girls that do this?
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A part of me wonders if she's doing it to get back at her ex boyfriend.
What do you think about people who post revealing pics?
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