1. Emo means emotional. Evanescence could be considered emo music.
Emo music has become a genre that's been twisted and turned into something else, it started out as a form of punk/hardcore with emotional lyrics and some actual soul, now it's mostly anti-social crybabies with bad haircuts and bad tattoos.
There was a guy I knew from a couple of towns over that dated and a former classmate of mine, used to be a great guy, then he got into Emo about 4 or 5 years ago, turned into a recluse, wore nothing but black and even had the daft haircut. Complete opposite from when I first met him, he used to be into Iron Maiden, Metallica Motorhead and so on, turns to Emo, suddenly dismissing everything he used to be really into.
I'm not dismissive of the music, just the way the so called Emo "lifestyle" has turned out.