With programmatic advertising online, advertisers target specific demographics of people. They are not tied to particular pieces of content or certain locations.
Therefore, advertisers and publishers are not always aware of exactly what content the ad will be put around.
This can turn out to be disastrous, or just funny. Examples of ad misplacement range from Donald Trump ads next to pro-Isis videos, to beer ads next to stories about drunk driving.
These mistakes have the potential to be embarrassing or even damaging to the advertiser in question. We compiled 31 of the funniest, or most unfortunate ad placements of the digital era.
Mallory Russell compiled an earlier version of this report.
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In 2012, this ad offering discount cruises appeared over a video of the sinking Costa Concordia.
While this ad for pastors unfortunately appeared over a video of a priest from London, who was accused of possessing child porn.
This year, a "Vote Trump" ad ran beside a video displaying an ISIS flag.
See the rest of the story at Business Insider