Girls and "kissy face" pictures? Why?

Why do girls on Facebook and MySpace (or any other social network) feel the need to take TONS of pictures of themselves with a phone or camera, standing in front of a mirror, and puckering their lips/making a "duck" looking face? And why do you need to wear so little clothing and do the two-finger peace sign thing? I see so many girls post up these pictures all doing the same thing and I just wonder... why? Can't you smile? Can't you post up a picture of you and your family or something? Or perhaps take pictures of nature or something creative? GUYS, do you find this attractive? GIRLS, um, yea. Just why?
Girls who do this just want attention--It's not attractive
Girls who do this are sexy
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Girls and "kissy face" pictures? Why?
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