For me indie is something that is a different sound than the crap we hear on the radio today. Also with instruments becoming equivalent, if not more important than just vocals. I guess the popularity plays along with it as well, some people say foster the people and mgmt are considered big now, but outside a few songs for both of them, no one really knows a lot of their other stuff. Pumped up kicks isn't anywhere near FTP best song to btw. I've become annoyed with that song.