タイトルで言い尽くしているのですが、英単語の中で今年最も人々の口にのぼったのは"Twitter"なのだそうです: ■ Twitter Declared Most Popular English Word of 2009 (Mashable) The Global Language Monitor, which tracks language trends, has once again compiled and released its yearly list of the most popular words and phrases within the English language. In 2008, the #1 most popular word was “change” (referring to the mantra of the top name of 2008, Bar