Indie pop is not just "indie" that is "pop." Not too many people realize this, or really care either way. But you can be sure indie pop's fans know it. They have their own names for themselves (popkids, popgeeks) and for the music they listen to (p!o!p, twee, anorak, C-86). They have their own canon of legendary bands (Tiger Trap, Talulah Gosh, Rocketship) and legendary labels (Sarah, Bus Stop, Summershine). They have their own pop stars, with who they're mostly on a first-name basis: Stephen and Aggi, Cathy and Amelia, Jen and Rose, Bret and Heather and Calvin.
They've had their own zines (Chickfactor), websites (twee.net), mailing lists (the Indie pop List), aesthetics (like being TWEE AS FUCK), festivals (the International Pop Underground), iconography (hand drawings of kittens), fashion accessories (barrettes, cardigans, t-shirts with kittens on them, and t-shirts reading TWEE AS FUCK), and in-jokes (Tullycraft songs and the aforementioned TWEE AS FUCK)-- in short, their own culture. They're some of the only people in the world who remember that Kurt Cobain used to kind of be one of them, and they've been wildly generous about the moments where one of their private enthusiasms-- like, say, Belle and Sebastian-- bubbles up into the wider world of indie music.