That certainly is a lot of info to get through, but some immediate thoughts to get the conversation going (if this topic gets enough attention, maybe it could be separated into a new topic with these posts in it?):
The illuminati are a real secret society, that is a fact. Another thing is whether you believe they rule the world, hide aliens and are led by George W. Bush.
Another thing, because illuminati means "enlightened ones", many groups claimed this name and the may be some confusion between them, ie. primitive satanic cults etc. Therefore clarifications as to what groups are these pages talking about would be nice. They usually put them all in one bag.
Illuminati started as a group of scientists and artist who were in opposition to the church. Simply put, they were men of science as opposed to men of faith. It is argued that later on they infiltraded free masonic society, which of course again blurs their goals that may be confused by goals of the freemasons. Supposedly W. Chruchill said that had the British infiltrated Nazi Germany the way freemasons and illuminati infiltrated the British Parliament, the war would be over in a month.
As for illuminati occultism, that is semantics, because many christian traditions/customs etc were directly adopted from other religions or cults (where cult is simply young religion) for example the halo over the head of saints is a sun disc representing the sun god from ancient egyptian religion. Just because illuminati adopted some symbols too doesnt make them any more "occult."