This document discusses how nonprofits can better engage with supporters through mobile and social media. It notes that over 90% of Americans own cellphones and over half own smartphones, showing the importance of a mobile presence. It recommends that nonprofits make their website responsive for mobile screens and optimize their newsletter for smaller screens. Additionally, it suggests using SMS/texting to engage supporters as almost all texts are read, and provides examples of SMS applications for programs, advocacy, and fundraising. The document also discusses using mobile event apps for check-ins, auctions, and polling to enhance live events.