Joanna Smith discusses various digital communication methods in her 4th block class, including email, podcasting, chatting, discussion boards, texting, blogging, and smartphones. These tools allow users to stay connected with friends and family, share ideas and opinions, find information, and accomplish multiple tasks from a single device. Popular smartphones like the iPhone, Palm Pre, and Blackberry combine computer and phone functionality, enabling users to call, text, email, surf the web, take pictures, and more.