EI has been openly critical of the PA, which is one of their issues. Beyond that, since Ali Abunimah supports a single binational (meaning Arab) state in the entire area, they say that this is just like what Naftali Bennett wants.
"Organizers of the site push the idea of one state in favor of the Jews, to fue the conflict for hundreds of years to come," says the article.
They say that the news has reached the Palestinian diplomatic mission in Washington that Zionist groups fund the site.
This is great stuff!
(Sorry, forgot who to hat tip)