Cas will find the recipe for it because 1) show would be boring with Sam in a catatonic state and 2) Cas loves his abomination.

You could tell when he was talking to Dean about the state of Sam's soul that he doesn't want Sam to suffer. Sam may be an abomination, but Cas likes him. He doesn't like like him as he does Dean, but he likes him.

Their bond is just a little less "profound," that's all.

Man, that line will never not make me happy. Along with the whole "I wasn't going to mention it" rider. Awkward!Cas is LOVE.

"We're not supposed to talk about it."

Misha's taking credit for crashing tumblr.

In the meanwhile, someone send off an SAE to the address he tweeted, eh? I want to know what comes back.

Remember when he made chocolate for people? Remember?

I just saw that! I was totally going to send one! Heh.

I've got to admit, even I am tempted to send Misha a SASE.

And from waaaay back:

(uh, that's TFW+Gabe sexing)

I'm sickly and slow right now. Gabe? Who is Gabe? Because I'm pretty sure ita isn't in bandom, so my knee-jerk assumption of Gabe Saporta has to be wrong.

Gabriel, babe, aka the Trickster.

(She's on NyQuil. It's okay.)

Oh! Right, and I should have remembered that. Wow, NyQuil really does screw up my brain. Good to know.

I'm pretty sure purgatory is a fairly Catholic concept, and as far as I know monsters (i.e. the wicked, the evil, any who egregiously are not in God's grace) would go straight to hell.

We know that vampires and those shifters who turned into dogs started out as human, and various other things might also. Perhaps Purgatory is needed to purify them from the influence of whatever curse turned them into monsters?

Depending on exactly how the cage operates, it's possible Lucifer and Michael aren't able to inflict any added torment on Sam. We know that just getting communication through to Azazel from within the cage was extremely difficult and required just the right circumstances. What we don't know is whether that's because it safely contains all the power of its prisoner and prevents him/them from affecting the world at large, or because it nullifies the power of anything locked in it. In the latter scenario, the archangels might have been limited to whining at their respective vessels.

Some of the more mystical sects in Judaism have a view of Gehenna that makes it a sort of purgatory. An analogy used is a great laundry where your soul is boiled and beaten and wrung until all the sin washes out. Maybe some sins are so bad that they never wash out, and those souls are eternally damned stuck in spin cycle forever. (Or maybe everyone gets clean after enough time has passed.) Most or all get reborn once the sin is out, and get to keep trying keep being laundered and reborn until they get a life right and make heaven. But being laundered is painful and , well, hellish. I think of it as a sort of super-therapy where you can't lie to yourself or therapist, and have to face to full consequences of everything you have done, and the full moral weight of all your actions and intentions. Effective but very very painful. And after you go through all that work, you have to forget what you've learned and try to do right just with however your soul has changed without being able to take any of that hard won self-knowledge with you.