A term created by people who have a need to feel different from everybody else, yet cannot without finding a derogatory term for people who listen to the radio. There is a reason the bands that "mainstreamers" listen to are on the radio, because they appeal to a larger audience. At one time, the bands on the radio were less well known. They weren't just born famous, they worked their way up to being on the radio and successful. What happens when the underground bands that others listen to finally get on the radio? Do they become "mainstreamers" too? Or do they immediately hate the band and move on.
Hey, look at that guy listening to System of a Down, what a mainstreamer.

I know, we are totally different from him. Let's go cut ourselves.
by Anonymous June 18, 2006
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Something that's popular. Sure, it's trendy, sure, it's probably on MTV and popular among people-but, honestly-is it really that much of an issue if I have Lady Gaga on my Ipod? She's in there with Amanda Palmer and Porcelain and the Trams as well-am I indie enough for you?

The lot of you are being really rude. Some mainstream is good, it's not the end of the world, so stop complaining that somebody else likes Rihanna and you like The Decemberists.

Grow up.
Person A: Hey, have you heard the new release from Lady Gaga? It's pretty good. I think I"ll give her a chance!

Person B: Umm..that stuff is forced down our throats by mtv and stuff. You shouldn't listen to that. Here, I got a new album based off of a Pitchfork review, you should try it.

Person A: *listens*
Yeah...no offense dude, but I don't like it.

Person B: *scoffs* You're just another one of the sheeple. A slave to the mainstream. You just have bad taste.
by Polygame January 1, 2011
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a usually preteen punk poser who worships the music played on the radio.(green day, coheed and cambria, 311, my chemical romance)They have no need for underground bands and watch MTV for hours hoping to see their favorite band onTRL.
John:i hear sean's playing "American Idiot" for talent show.
Ken:He's such a mainstreamer.
by nasera January 2, 2006
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basically, what's popular, like rap music in most ways.
most mainstream rap artists are entertainers, cuz they giv what the public wants, which is new ish!
by Marshall Mirzada December 4, 2003
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A member of a popular croud with no soul, usually found at a middle school or highschool. They have zero taste in music or movies, they use these things as a way to get more popularity. They make tee-shirts that say "(insert event here) is life" or "I Heart (insert event here)" usually the event would be viewed as uncool so they get a large group of people to pretend it's cool so that they can all feel cooler.

anyone with a soul hates mainstreamers except for the head mainstreamer because they have control of the entire mainstream body
Dang those dumb mainstreamers made stupid bowling t-shirts and bragged about it for ever.

GOD DAMN, he sold out to the mainstream.!!!
by level -20 mainstreamer August 20, 2006
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