I'm just personally not interested in it, yet. I am so not a fan of anything vampire. It just heebs me regardless of how "good" it may be.
My 9yo who could read it--hasn't been given the option, but it hasn't been denied either. She loves reading novels involving animals and isn't into getting spooked. She does enjoy a good mystery.
I haven't heard of any mass anti-twilight movement. Everyone I know is gaga over it.
As a genre, it just doesn't appeal to me and no I don't find Vampires cute, sexy,and irresistable.
I have also heard--that as a piece of literature, it isn't all that great. But part of that (I think) is that adults are interested in it,
but it is written at a much younger level. It isn't going to be Sense and Sensibility or Dracula. That would be right up my alley as I like "easy reader" novels that don't provoke a lot of thought. But again--so not interested in Vampires.
I didn't even like the Vampire storyline on Wizards of Waverly place.

But my kids got a kick out of it.