Today, The Independent has launched a campaign to free Sayed.
You can sign the petition here.
His brother Sayed Yaqub Ibrahimi claims he was not allowed a defence lawyer and that the trial was held secretly.
Rahimullah Samander, the president of the Afghan Independent Journalists' Association, said: "This is unfair, this is illegal.
He just printed a copy of something and looked at it and read it.
How can we believe in this 'democracy' if we can't even read, we can't even study?
We are asking Mr Karzai to quash the death sentence before it is too late."
Sayed was a journalism student like me, and it's scary what's happening to my equivalent in Afghanistan.
He reported for the newspaper Jahan-e-Naw
Please sign the petition and save Sayed's life. Do you really want a 23 year old to die for what he downloaded?
A Facebook group has also been set up. Sadly, a handful on the group support the sentencing.
Anna Penketh on the sentence.
Hans-Gert Pöttering has issued a plea for mercy.
International Federation of Journalists info.