I actually think their albums got better with time. You know, actual lyrical content and a less alternative-heavy influenced music style.
I love Resistance and Black Holes.
Maybe that's the reason of their success. This shit appeals to more people, like me..
I think that Twilight is not the major factor of their success though. It may have opened them up for a new public, but aside from this new song I don't think that's their main demographic target..