OK, first things first. I use my friends list to collect journals I want to read, that I don't have easy access to somewhere else. If I don't add you, it may mean that you are already on ANOTHER friend list that I read often (like jason0x21 or la_sherazade).
I also add people sometimes as a reminder to read a specific post, then delete them once I have.
Also, I'm fickle and I've been known to lie.
As far as an actual "bio", read my interests list and assume I've had some involvement with everything on it. I've also had way too many jobs/roommates/"favorite (insert media unit here)" to mention on this page.