User blog comment:LunaBella/Twi-Hate/@comment-1642927-20100328041654

When it comes to something that is immensely popular, there is a tendency to hate no matter if you've seen, read it, etc. It probably doesn't help that the vampires sparkle in the series. I know I'm not a fan of that.

It might be the huge deviations from established vampire lore that people hate. I imagine it's a combination of things.