I think I left mine blank when I first got the account. But eventually I decided to put something there. "Atheist" doesn't accurately describe my "religious views," and why would I willfully reveal to hundreds of friends and friends of friends of friends the fact that I eat babies? What else could I write? "Former-Christian"? "Myth-Lover"? "Ask me when I'm dead"?
I took a cue (once again) from William Blake: "I must create a system or be enslaved by another man's." I came up with my own:
SPELLIANISM
(I named it after myself.) This is its description: "The prophetic writings of William Blake, the Joseph Campbell approach to myth, a marriage of humanism and mysticism, absolute liberty for others, and the necessary blasphemy of tricksters. (Major texts include William Blake: The Marriage of Heaven and Hell, Joseph Campbell: Thou Art That, Christopher Hitchens: The Portable Atheist, Paul Radin: The Trickster, and the First Amendment of the US Constitution.)"
If Spellianism were a religion (and it isn't), you couldn't join it. It's just for me. Even more exclusive than "God's chosen people."
I feel the description of Spellianism does a pretty good job of at least pointing you in the right direction. It's easy enough to unpack all the authors, terms, etc. and put together a decent starting picture of how I think about religion. Most important, no one has ever said a word about it to me, so I think that means it has done its job. Or it means that no one looks at these things anyway.
My political views on Facebook were a lot easier to answer. One word: "Angry."
UPDATE (2018): I CHANGED IT TO JUST "ATHEIST." IT'S BEEN THAT WAY FOR YEARS NOW. STILL SAYS "ANGRY" FOR POLITICAL.