How did they trace that MySpace account back to Lori Drew?

Did she just confess or what? Did she go under a legitimate email address? The IP address doesn't reveal very much - just location such as state, town, sometimes neighborhood, but not the person who did it - so how do they know?

At some point, she obviously admitted it so I also want to know why is this woman not in jail?

OK, so if it can be perfectly traced, then why is she not in jail? Does that not count as harassment or intimidation?

The idiot created a myspace account with an email address provided by her server. That's how.

She isn't in jail because she didn't kill her, but now what she did is construed as harassment in that particular town, but not in the state or the U.S. She is a lousy human being, I agree, but she didn't technically commit a crime.

actually and IP address gives very much information and how technology is today its very crazy... so it had to be something to know it was her

Actually, your IP address uniquely identifies you on the Internet. The authorities can go to the local ISP that has the beginning of the IP address and have them tell who uses the IP address that is the culprit. Bingo, they know the exact address of the IP address.