I don’t know if she’s as guilty as sin or not (I didn’t follow the media hooplah at all, and still haven’t read much about the case); she certainly did everything she could to make herself look guilty. But merely looking guilty is not a crime.
The government did not prove its case beyond a reasonable doubt.
I don’t know if it was cause of the CSI effect or not, but what I’ve read makes it sound like the prosecution completely flubbed. It looks like they were going for a high-profile career-making sensational case, instead of proving what they could.
Whether Anthony killed her child or not, she definitely could have been brought up on negligence charges; given her behavior, those would have been almost sure to stick.
I should also remind readers that we don’t have a justice system.
We have a legal system.
P.S. Don’t talk to the cops. They are not your friends.