This is what genres do really well, for good and for ill: They make large amounts of music easier to talk about (and, by extension, sell). Most often, genres do not stand up to scrutiny, yet they’re a fundamental part not only of music discussions online and off, but of any conversations we have about culture more generally. Particularly with the infinite online options for music access and conversation, pithy and memorable genre names can make it easier (if not necessarily accurate) to classify, discuss, and compare music. Genres arise out of tastes, and are often institutionalized (I wrote about one such example here), though online there’s infinitely more space to create, market, sort and search by micro-genres. (Remember “witch house”?) People have lengthy, years-long arguments using genres as combatants. If nothing else, genres make music easier to fight about.