Of the three secret societies vying for power in Funcom's supernatural MMO The Secret World, the Illuminati is probably the most well-known. That's probably not a good thing.
I mean when your secret society has a Wikipedia page you're probably not quite as secret as you think you are. Just because you can't see them doesn't mean they can't see you.
In The Secret World the Illuminati are the puppet-masters, the power-brokers, basking in the power, wealth and fame that comes from having a large portion of the world's corporate sector in the palm of your hand. They get the coolest outfits, hang out in the shiniest headquarters, and party harder than the Templars or the Dragon combined. If that appeals to you, then this is your group of secret folks.
Still not sure? Head to the official website for The Secret World and take the personality test. It'll help you find your other self.