Hey guys,
So let me start by saying I have read two of the threads provided, but I have also heard reasoning on some other sites regarding this subject. Since I am fairly evolving into an agnostic (wether I realize it or not), let me start by saying that even if I was not, I would not consider "gay marriage" an issue. "Marriage filing jointly" is just a legal tern on your IRS form. It affords rights to people that I think all should have. But just because the government sanctions something, doesn't mean that the "church" has to bless it. It shouldn't matter anyways considering the desire for separation of church and state.
That being said, I would not consider the links provided as "evidence" of homosexuality being a-ok with the God of the bible. In fact, I think the evidence falls contrary to it. Regardless, the sexual act outside of marriage would be forbidden and be fornication, and the bible sets marriage in a non-secular setting to being limited to a man and woman when it was instituted. One could decide that anything outside of that, is considered "fornication", and therefore not cool.
The recent attempts to grasp at straws biblically speaking to say its all good to be gay from the bibles perspective, I think are born more out of a desire for the Christian right to want to win an election or two, and less about actual veracity of claim.
I'm down to tussle over it, but honestly I have no real dog in the fight one way or the other. Sometimes in looking at the atoms of an arguement, you can forget those atoms make up a greater item. I think the greater item and overview of the scriptures you have already mentioned, is that the bible never intended for men to be with men.
I could always be wrong, and I'm willing to revisit this later when I have a few more minutes if you like.
Peace!