For once, the Internet helps -- instead of hurts -- a teen.

The positive side to the generation that lives life as an open book via movies, pictures and social media websites is when a piece of footage can be used as evidence to identify and prosecute  bullies.

Last September, one such incident involving a girl and her boyfriend resulted in an arrest.

Alexis Xanders, who calls herself "emo"  -- often described as sensitive teens -- was being followed home by a group of classmates. Those teens began urging one of the group to punch Alexis, saying, "If you hit that b*tch I'll give you five dollars." Luckily a camera was rolling.

Apparently Alexis had been targeted because she did not like the band Insane Clown Posse. 

Two months after the assault, the student who made the video sent the video to Xanders, who put it up on YouTube and CNN's iReport.

Enter a newspaper reporter who saw the video and alerted police. Now the 15-year-old assailant is charged with assault, individual counts of assault, menacing and unlawful restraint,

"Someone did see it and sent it to a detective. I didn't think anything would actually happen with all of this because it happens all the time," the high school freshman told CNN.

Xanders says the the girl who assaulted her, whose name has not been released, hasn't liked her since elementary school and has been harassing her for years. "I don't really know why," she says. "She just never liked me."