When a band/artist is played on the radio so much that that song/artist becomes hated, even if it/they are actually pretty good. I swear, overplay is not the artist's fault, just those crappy DJs that can't get their hands on anything better to play. Victims include:
Radio-only listener: Man, I fucking hate Nickelback!
Me: Don't say that! Nickelback is an awesome band. Many people like just suffer from Primary Overplay Syndrome.