We've seen dozens of threads where a person makes a "dumb" tweet or remark and it slowly snowballs to the biggest trend on multiple forums/sites. NYtimes has an interesting piece on Sacco and others on how social media turned on them. What happens to you emotionally and physically? It's a good read if you have a few minutes to spare.
http://www.nytimes.com/2015/02/15/magazine/how-one-stupid-tweet-ruined-justine-saccos-life.html
As she made the long journey from New York to South Africa, to visit family during the holidays in 2013, Justine Sacco, 30 years old and the senior director of corporate communications at IAC, began tweeting acerbic little jokes about the indignities of travel. There was one about a fellow passenger on the flight from John F. Kennedy International Airport:
“ ‘Weird German Dude: You’re in First Class. It’s 2014. Get some deodorant.’ — Inner monologue as I inhale BO. Thank God for pharmaceuticals.”
Then, during her layover at Heathrow:
“Chilly — cucumber sandwiches — bad teeth. Back in London!”
And on Dec. 20, before the final leg of her trip to Cape Town:
“Going to Africa. Hope I don’t get AIDS. Just kidding. I’m white!”
By the time Sacco had touched down, tens of thousands of angry tweets had been sent in response to her joke. Hannah, meanwhile, frantically deleted her friend’s tweet and her account — Sacco didn’t want to look — but it was far too late. “Sorry @JustineSacco,” wrote one Twitter user, “your tweet lives on forever.”
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By the time Sacco had touched down, tens of thousands of angry tweets had been sent in response to her joke. Hannah, meanwhile, frantically deleted her friend’s tweet and her account — Sacco didn’t want to look — but it was far too late. “Sorry @JustineSacco,” wrote one Twitter user, “your tweet lives on forever.”
http://www.nytimes.com/2015/02/15/magazine/how-one-stupid-tweet-ruined-justine-saccos-life.html