The source was a Palestinian nursing message board, palnurse.com.
Looking a bit further at this site, one sees normal chats appropriate for nurses, asking advice from colleagues.
And also a healthy dose of terror support and anti-semitism.
This entry quotes Hitler approvingly on his opinion of Jews.
This thread is about "the wickedness of the Jews."
This one claims that Hamas pulled a fast one on the Jews by giving them a fake Gilad Shalit.
This one proudly points to videos of Jews running away from rocket attacks.
And this one details all the terrible attributes of Jews (thievery, murder, corruption, cowardice, hating Muslims, and so forth) and the nurses respond consistently with "Allah bless you" for such a wonderful post.
The contrast between how Israeli doctors treat all patients with respect and how Palestinian medical workers boast of their Jew-hatred cannot be clearer.
There is another entry about the wickedness of the Jews, using a fairly funny joke to supposedly illustrate it.
It seems the Church decided to make some cash by selling off guaranteed portions in Heaven. People paid exorbitant amounts to get their portions, especially if they had not led the most exemplary of lives.
A Jew approached the church officials and asked how much it would cost to buy Hell? The church thought he was crazy, but obliged him and sold Hell for a high price.
The Jew then showed his deed to Hell to all the people, who then said that if Jews owned all of the portions of Hell, then why should they have to pay so much to get into Heaven - they would get there by default! As a result the entire market for Heaven crashed.
The church, alarmed, was forced to buy back Hell from the Jew for many times the selling cost.
Yes, to Arabs, this joke is evidence of Jewish evil.