....okay, did anyone else notice this HUGE plothole?

It's probably like alcohol. You know, drink. When you high on blood you don't really care how you treat the package. But yes, I didn't like the way they looked like they were eating the flesh as well.

Nothing is more reliable than a man whose loyalties can be bought with hard cash.

In Anne Rices books some of the older more experianced vampires only drink the blood without killing their victims. This is so that they can keep themselves a bit lower profile as a murder will draw alot more attention than an assault and also if there is a limited supply of victims then they wont run out. Also some are not the sadistic killers portrayed in the movies. They also gain more and more special abilities as they get older.cool stuff.

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That's the huge plot hole??? NO! The huge plot hole is the one where Sadies family goes to bury her and... NO BODY!!! Ding, ding, ding. There should have been a least a mention of her family not giving up hope. That's a plot hole. Angst over feeding? Inconsistent personal/emotional writing at best.

When Lions eat their prey, ever notice they don't care about table manners?

Ever seen a drunken David Hasslehoff eat a hamburger?

Now imagine a creature with an animal instinct that gets really drunk/high from blood... And there you have it.

I think it was a stylistic choice rather than a plot hole. Vampires are straight-up monsters in this movie, even Sadie. It's part of the attempt at noir-i-ness. The exaggerated grossness when they feed is part of how they communicate that they're capital-B Bad. The huge mess of blood marks them as unclean, even damned. It's the mark of Cain, the mark of a murderer.

As an interesting side-note, it's also an indelible mark. It's subtle, but Sadie notices slight red staining on Tricia's chin when her father is hugging her, as if she hasn't quite cleaned all the blood off, and I thought it was a really nice bit of understated horror, y'know, detail work instead of splattered gore. Anyway, that's how she knows she's been drinking blood and is a vampire.

Well, that and the fact that she's known to be dead. :)

these are not plotholes

It's just a huge plothole. It looks like they've put in vampires just to call it a vampire flick and get the attention, becouse this movie has got nothing to do with vampires at all. I mean if you would just say they were pedophiles or rapists, hackers or maniacs, it wouldn't have made any difference to the story.