you cant kill an genre. you cant say that "punk rock" is dead or "crunk". but Jimmy Eat World isnt emo I really dont understand the emo part about them? and Death Cab For Cutie is pure Indie Rock.
emo is emotive/emotional hardcore but the most band who is called emo today is indie rock or pop punk band with songs about heartbreaks and relations. and then they are the scene-emos like alesana, chiodos and so on who really wants to be label as emo.
the closest you can come the genre today is hardcore.
but I really dont understand why anyone call paramore emo when its clearly pop or maybe pop punk all populair music today is about feelings and love