Short Take: Leap Group shares up fivefold

Leap Group said it did not know why its stock was up more than 85 percent today, or why its shares have jumped more than fivefold during the past week, but Bloomberg attributed the hike to a barrage of email messages touting the company's shares that appeared on the Yahoo Web site. More than 1,300 messages discussing the advertising agency's shares have appeared on Yahoo's message board since Friday.