Just watched the movie. Didn't make sense of half of it, still good fun. Here no one takes the series very seriously, so I had a great audience that was laughing at both the overly sappy serious parts and the humorous parts.
It ended up being a nice bit of stupid entertainment. No one's going to live by the Twilight code, just as nobody was adversely affected by the airport shootout mission in MW2 - human minds don't fall for this sort of escapist fantasy crap unless they're ill (see TwiMoms), and most fans grow out of the mania. Eclipse to me has the same value as Ilsa, the She Wolf of the SS; admirably incompetent in the story department, with a ridiculous premise, but extremely watchable. Don't go watch it if you don't want to support this kind of thing, but if it's free, give it a try. Without doubt, the films are very competently made, the trite and ridiculous plot is well paced, and even the most annoying character are presented well, even if their lines are HORRID.
If it's any consolation, this one introduced Watchmen-like flashbacks, and they really make it tolerable. Especially with Jasper's Civil War bits, those actually had me interested. And the scene with Bella's mom is pretty damn good. It still stands that the movie has a plot that simply does not deserve so many millions of dollars, and the hate stems from its attention-hogging. I mean, no one is bothered by Uwe Boll's House of the Dead being bad, they actually watch it because of it! But Twilight is when bad became profitable and stopped being funny for many people. Strip away the hate, and the films are well-produced below-average teen dramas with weird mormon propaganda instead of action. Which actually makes them more spoofable.