Susan Boyle: #susanalbumparty was misread inappropriately.

Spotify: Tweeted playlists based on users’ private listening data, causing privacy concerns.

Aldi: Social media campaign backfired when users shared negative experiences.

Tampax: Offended users with an ad suggesting periods were a competition.

SeaWorld: Twitter campaign #AskSeaWorld led to questions about animal treatment.

Bud Light: "Up for Whatever" campaign faced backlash over a tagline suggesting “no” didn’t mean no.

Hyundai: Released an ad featuring a man attempting suicide, which was widely condemned.

Heinz: QR code on ketchup bottles led to a porn site after domain expired.

Starbucks: #RaceTogether campaign intended to spark conversation about race was criticized as insensitive.

Chevrolet: Misspelled "technology and stuff" in a World Series MVP award presentation.