@Walter Hinteler,
That's not too bad of an article, but it makes some pretty serious factual errors.
For instance:
"The cartwheel she turned in the police station became a whoop of insouciant joy."
In reality, she never did a cartwheel. She did a split, after an Italian police officer asked her about her gymnastics ability.
"And, guilty or not, Knox made a series of terrible decisions – from her false confession, to implicating an innocent man, to failing to attend a vigil for Kercher."
The first two were the result of the Italian police hitting her in the head until she said what they told her to say. She didn't have time to attend the vigil because she was too busy having false statements beaten out of her. None of this is the result of any decision by Amanda or Raffaele.
"agreed to be interviewed for four days by police in a language she was just beginning to get to grips with, and without a lawyer."
Amanda wasn't given much choice in that matter.
"the prosecution found that a knife in Sollecito's apartment had a trace of Knox's DNA mixed with Kercher's"
The prosecution never tried to claim the DNA was mixed. And what the Italians did was draw a copy of Meredith's DNA results on a sheet of paper and then pretend that it came from a test of the knife. No such test was ever conducted. (The knife, it should be added, is not even the same size as the murder weapon.)
"Sollecito's DNA was detected on a clasp torn from Kercher's bra."
No test has ever managed to detect any such thing. However, since the Italian police made it pretty clear that they planted his DNA there, it seems likely that a competent test might have found such, had a competent test ever been conducted.
"The jury did not believe [Guede] and he was sentenced to 30 years – reduced to 16 years after he named Knox and Sollecito. Guede could now be released in a couple of years."
Guede has received three sentence reductions, and none of them are related to anything he said about Amanda or Raffaele.
Because he opted to be tried in an abbreviated hearing in front of a judge instead of by a full-dress trial, Guede received an automatic sentence reduction according to the following:
a) any sentence of LIFE with Daytime Solitary Confinement is reduced to LIFE
b) any LIFE sentence is reduced to 30 years
c) any other sentence is reduced by a third
Guede's second sentence reduction is the result of the persecution of Amanda and Raffaele. Because of the confusion that created, Guede was not convicted of stealing Meredith's money, and was not even charged with breaking and entering. This led to him being sentenced according to line "B" above, instead of according to line "A" as he would have been if properly charged and convicted.
Guede's third sentence reduction is the result of Amanda and Raffaele's original conviction. They received mitigating circumstances leading to a light sentence of 24 years. The courts then gave Guede the same mitigating circumstances and 24 year sentence, solely for the reason of bringing his sentence in line with theirs. Then, according to line "C" above, that was reduced by a third.