-Does canon make Buffy out to be a natural blonde? I.e., is her altar of love, her carnal trap, her eye that weeps most when best pleased, her bearded clam, her garden of eden, her nest of curls blonde in most fics? What? Just asking.

In canon, young Buffy is brunette in "Killed by Death" and blonde in "Weight of the World." In fic, most fics which bother to make a point of the issue have her die her hair, which makes sense because why would the ones in which she's a natural blonde even think to bring up the issue?

-Is there a generally accepted explanation for how vampires get it up?

It's magic.

-Is the idea that vampires "pretend" to breath in order to look natural a fanon thing, or was it on the show?

Well, yes and no. We have a show in which the actors obviously breathe, and the writers of fic have to deal with the fact by creating some type of personal fanon. I've found it tends to vary from writer to writer, though.

-Is Andrew ever a heterosexual in fics?

He's a heterosexual with homoerotic subtext in my fics, just as he was in canon. I don't want to fall into the trap of assuming that just because he acts a certain way we can make assumptions about his sexuality. That's why a lot of assumptions about Andrew tend to bother me.

-Whatever happened to Miss Kitty Fantastico? Did Dawn really shoot her with a crossbow?

There's a canonical conversation which suggests this is the case, when Dawn is talking to Xander: "Xander, my crossbow is not out here. I told you, I don't leave crossbows around all willy-nilly. Not since that time with Miss Kitty Fantastico." But that's all the canon we have on the matter. Nothing "really" happened, of course--it's just a text, so you can retrocon it however you want as long as you don't just ignore it.

-Do vampires sweat?

I don't know.