Narcisselfist - someone who shares an irregular number of random self-portrait on social networking sites for no other apparent reason than to passively solicit some sort of empathic reaction from friends both real and virtual. I experience narcisselfists as needy, attention grabbers - regardless of whether the reaction they seek is a "You look mahvelous" or "Gah! I'm so sorry that happened to you!"
I understand selfies taken and posted when something extraordinary is happening - sharing the euphoria of a visit to the Taj Mahal (or the Grand Canyon or even America's Stonehenge), documenting a special date with family or a dear friend, or even showing off a particularly flattering haircut. To me, these selfies are best understood with clear explanations - so no opportunity for misinterpretation of the intent of the photo. "Look! I'm at the Taj Mahal! "lucky" or "Yup, I really DID get my hair chopped off. I love it."
But selfies taken and shared for selfies' sake? I read them as pure, irritating narcissism.