Hashtag

Hashtag è la parola dell'anno 2012, secondo l'American Dialect Society. "Hashtag refers to the practice used on Twitter for marking topics or making commentary by means of a hash symbol (#) followed by a word or phrase.
“This was the year when the hashtag became a ubiquitous phenomenon in online talk,” Zimmer [chair of the New Words Committee of the American Dialect Society] said. “In the Twittersphere and elsewhere, hashtags have created instant social trends, spreading bite-sized viral messages on topics ranging from politics to pop culture.” americandialect.