New York--Unicast launched the Full Screen Superstitial, a new online ad unit that gives advertisers TV-like capabilities. The unit is a full-screen, 15-second format that features rich-media capabilities and appears between Web pages during a browsing session. Also, online research company Dynamic Logic released results of a study showing the effectiveness of the new ad unit during testing. According to the research, the Full Screen Superstitial had a significant impact on brand awareness, message association, brand favorability and purchase intent. More information on the research is available at www.unicast.com.