I see, which means the likes of Muslim Brotherhood and Hamas are considered as Islamist,while Fundamentalism are the likes of Salafists.
I noticed the christian fundamentalists are the fond of using that word "Islamism" for Islamic fundamentalism. Thats interesting.
It depends on what type of Salafi you're talking about, if its the sheikhs loyal the saud monarch then yes they're more fundamentalist than Islamist. If its Salafi jihadists (Al-Qaeda and co.) then they're more Islamist than fundamentalist.
As for Christian fundies, Sprout is right, they're like ALL right wingers or like the obama/sarkozy/cameron trinity-oppose their policy's and you'll get called all sorts. They don't mind how fundamentalist you are (Saudi, Karzai regime etc) as long as you're not political, its why the past pariahs of the middle east weren't religious at all they were secular socialists (Nasser's Egypt, the PLO etc.) but were political thus a problem. Today, the biggest political threat happens to come from Islamists, they're the ones rejecting IMF loans to Egypt and blowing up tanks in Afghanistan, that's why we're told 24/7 that they're "evil" and "terrorists" lulz.
No, Christian fundies use Islamism to talk about any Muslim, and probably an ex-Muslim who doesn't buy into their dogma too.
Saudi is an odd one, salafism used to be exclusvely fundamentalist (I would say a good example is the Chechen leadership, or the Taliban perhaps) but are now have a much wider political goal which makes them Islamist as well.
I think the only aspect of Saudi that is secular is its foreign policy, but even then they use sectarianism when it helps to achieve their policy's. Yup, you're right about the Taliban, prior to 2001, they weren't into international politics at all, now they release statements in an Al-Qaeda type manner, the statement after the Gaza aid flotilla piracy attack is a good example. Foreign jihadis have helped transform their ideology and have actually made them more modern.