The cosine (edit: sine) of 666 is the negative of half the golden ratio. It's just like WOW, the brain forms associations, or something! That was the subject of this yahoo.com article as well, to a large degree.

I checked out a bit of occult shit when I was your age, there was no one to tell me not to. Maybe one person did. So I'll tell you, Devac, don't waste your time. Spirituality is fine, but a lot of the occult crowd is looking to sell it to you. #unsolicited #advice #hashtagging #wrong

By the way, an old schizophrenic acquaintance popped up on a very intellectual friend's facebook the other day to spout Flat-Eartherism. One girl dropped by to say "wow, I've never seen one in the wild before" and got a few too many likes. Kinda rough to watch. In his, um, philosophical arguments, he did link this one, which is something that I've been doing backwards with my research, explaining fluid motions like people in a trajectory through society space, and now I have a name for it (ish). So there's usually something good, you just gotta wait for it. And usually only lurk.