1 ExxonMobil
The Twittersphere embraced the oil company's supposed foray into social media. The problem was, “Janet” – who was posting as an Exxon employee – was actually a fake. Exxon missed a social media opportunity because it had engaged followers, but then closed the Twitter account without launching a legitimate one.

2 Target
By now, companies and organizations should have learned their lesson– don't ignore bloggers. Target created a firestorm earlier this year when it brushed aside a blogger's ...