This document discusses the emergence of tablets as a "fourth screen" alongside televisions, computers, and smartphones. It notes that while 60% of people have adopted tablets as early adopters, 40% have not due to cost concerns, category uncertainty, and a lack of perceived necessity. However, barriers to tablet adoption will continue to fall as consumers understand the unique role of tablets in allowing portable, flexible entertainment and information access. The document predicts tablets will change mainstream behaviors like shopping, social media use, and entertainment through mobile coupons, easier content creation and sharing, and dual screen media engagement.