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In the digital age, we increasingly use written language in place of face to face chat or phone calls. But the advantages email, chat, and text give us in speed come with limitations in communicating emotional tone. Enter emoticons and emojis. Not just a playful supplement to language, these new tools allow for complexity in tone and emotion never before possible in written language, as well as provide new opportunities for creative expression. Rapidly spreading throughout culture, emoticons and emojis fill a void in written language that few realized we so desperately needed.

Over the past day, Al Jazeera has pushed the issue with its promoted trend and tweets like this, which reads "Like our coverage from #Egypt? Think we should be shown on US TV? It's time to #DemandAlJazeera http://aje.me/demandAJ." Yesterday, clothing outlet Kenneth Cole tried to leverage the popularity of Egypt-related hashtags in a similar manner, tweeting "Millions are in uproar in #Cairo. Rumor is they heard our new spring collection is now available online at http://bit.ly/KCairo." Immediately, the company caught a lot of flack for the tweet and shortly after publicly apologized and pulled the tweet. The difference in the two situations, we would think, is that Al Jazeera is trying to leverage the popularity of a specific event to gain entry into a market that has essentially shut it out. The end result might be similar to Kenneth Coles' desired outcome - increased sales - but it would come with the increased spread of information.

Businesses that hoard information in their head office and keep staff in the dark on important metrics risk falling behind their competitors, according to MIT business guru Jeanne Ross. For organisations to fully benefit from this information, they need to share it with their staff, customers and business partners, she said. Once these groups get hold of such information, they can use it to take decisions that will boost the business. Customer service reps with a raft of data are more likely to be able to answer customer queries without having to refer the customer on, for example, and in the process save the company both time and money. But instead of spreading this information around, businesses have a tendency to keep it in head office and share it between a small pool of managers, who use it to run the business from the centre.

Next time you feel like broadcasting some gloomy tale of woe on Facebook, you might want to think twice. Your friends could catch your feelings. Psychologists have long known that emotions, just like germs, are contagious. People exposed to a person experiencing strong emotions may experience similar feelings, catching them through facial expressions, tones of voice or some other means. But now there is a new means of transmission -- social media. Facebook data scientist Adam D.I. Kramer analyzed postings by about 1 million English speakers and their roughly 150 million friends in multiple countries on the social network to show that the words people use in their status updates drive the emotions of their online friends, even days later. Kramer found people who used emotionally loaded words like "happy," "hug," "sick," and "vile" in their status updates sparked similar emotions in later Facebook postings by their friends.

A full hour before the formal announcement of Bin-Laden's death, Keith Urbahn posted his speculation on the emergency presidential address. Little did he know that this Tweet would trigger an avalanche of reactions, Retweets and conversations that would beat mainstream media as well as the White House announcement. Keith Urbahn wasn't the first to speculate Bin Laden's death, but he was the one who gained the most trust from the network. Why did this happen?