If someone has kind anime girls on his avatar, he's usually pleasant to talk to, cute, polite, fair, and kind. But if someone has cunning, aggressive, and crazy anime girls, they're usually some kind of lowlife who's strayed from their normal, no-good group. Nothing good can come from them; communicating with them is like communicating with some inmate. The first 1 and 2 pictures are examples of kind and cute girls, while the 3 and 4 pictures are examples of mean and aggressive girls.