I take it that FaithFan2005 is anti Buffy and pro Faith.
Traquillity.
Blood can be used in other types of magic, so what happened wasn't necessarily black magic.
The biggest joke is that Willow is meant to be of the Wicca faith, a nature based religion.
And just for the record, I liked that episode.
I like the episode too. i said it was black magic because that's what it says, or at least implies in the show. I know knothing about magic!
eg:
from Bargaining Part 1:
TARA: Hey. You're late.
WILLOW: Oh. (too casual) I, uh, had to get that thing.
XANDER: Giles isn't around, you can dump the cryptic.
WILLOW: (nervous) The last spell ingredient.
XANDER: Okay, right. What is vino de madre anyway?
WILLOW: Wine of the mother. Kind of ... black market stuff.
TARA: Black market, you-you didn't tell me that. You shouldn't have gone alone, it could have been dangerous.
WILLOW: Sorry. I didn't ... I was careful.
ANYA: Well, it must be something pretty intense. The black market's all baby teeth and spooky fluids.
WILLOW: All I know is we have to have it to finish the spell, so, it's good stuff in my book.
or
from Flooded:
GILES: Do you have any idea what you've done? The forces you've harnessed, the lines you've crossed?