Twitter policies come to workplace: "Twitter revolutionized small talk. Now it's rankling bigwigs. Although the popular social networking site limits each post to 140 characters, there appears to be no limit to the anxiety it's causing major players in sports, media, business, the courts, the military and other fields. Attempts to regulate Twitter's use at work, at school and on government time are soaring, and examples of Twitter jitters abound. Posts, called tweets, are resulting in fines, lawsuits, scolding and shame."