The people at Muslim Matters are not big fans of Giuliani:
His team consists of the same people responsible for the Iraqi war and will likely take us to war in Iran soon if Giuliani takes over.
His team is more right-wing and more hawkish than even the right-wing Likud party of Israel, and will make every effort to destroy any chance of achieving lasting peace in the Middle East.
It's always interesting to see which US presidential candidate attracts the most vitriol from the Muslim blogosphere. In my eyes, it counts as a plus.