Ever hear of the Kinsey Scale? I think you'd find some utility in it.
TIP: The original criterion of sexual history may not necessarily accurately reflect who you are, and can be easily thrown off, so my suggestion is to evaluate yourself based on how you feel/have felt.
Hey, don't forget all the gay and bisexual girls on NS!
As for this thread itself: I'm still trying to figure out this IPO business, so I'm gonna reread the news and peruse this thread a bit.