Oh, Fuzzie, but plain old fraternities -- even of the wealthy -- just aren't nearly as much fun as groups of Illuminati that arrange the opium wars and the JFK assasination, now are they? (And actually, S&B isn't a fraternity; it is a senior society.) No, world domination via the New World Order is a lot more juicy.
Actually, reading through the whole link that you provided, it appears that the book in question debunks many of the better conspiracy legends. Might actually be a good read.
In the meantime, sometime when you have some time, check out the "information" at this site:
The Order of Skull and Bones. It's always good for a chuckle or two.