This document discusses various mobile technologies and applications for libraries. It covers social media platforms that can be used on mobile devices like Twitter, Facebook, and Skype. It also mentions e-books applications like Kindle, Project Gutenberg and FreeBooks. Other topics discussed include using mobile devices for banking, photos, videos, GPS, databases and reference services through text/IM. The document raises questions about developing features for specific phone models, who owns users' mobile content and data, and the appropriate use of mobile technologies in libraries.