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Denny's restaurant in the United States once printed thousands of menus for their dinner service -- with a misprint that confused many of its customers.
At the bottom, the menu invited you to "Join the conversation" by visiting its Twitter profile at twitter.com/dennys.
However, its actual profile name is @DennysDiner -- whereas @dennys actually belongs to a man living in Taiwan. Customers that loks up the profile were no doubt confused when they met tweets in Taiwanese.
Domain registrar GoDaddy's CEO Bob Parsons released a video of himself shooting a "problem elephant" in Zimbabwe -- to the shock of the social media community and to the detriment of the business.
At best, the CEO could have chosen to limit the video to a privacy-secured Facebook profile. Instead, it was released on Twitter.
Even forgetting how creepy it is to outfit everyone in the village with Go Daddy baseball caps, the footage resulted in campaigns to Boycott Go Daddy -- later repeated by its public support of anti-piracy bill SOPA -- outrage from animal activist groups, and a social media backlash.
Parsons later defended himself on his blog, arguing that his target was a "problem elephant" that had been destroying crops that supported villagers. However, when you are a public figure, releasing such footage can do no good for the reputation of the company you represent.
Habitat UK is commonly associated with fabrics and upholstery, but came under fire when it decided to hijack hashtags to promote itself.
Hashtag are used in order to 'point' a tweet at a certain conversation. Examples include #edtech (educational technology), #jobs and #business.
What Habitat decided to do, however, was hijack any hashtags that were trending on Twitter -- and therefore popular -- to market their products. From popular television show #Trueblood to the Iranian's elections' #MOUSAV tag, nothing was safe.
The online community condemned the company for its social media actions, and it was forced to apologise to the public.