Roger Stringer shows how to build a live blogging tool using Twilio SMS and Simperium. The tool allows users to post updates from their phone, which are then displayed on a website in real-time. The process involves setting up a Twilio account, creating a Simperium account, and installing the necessary PHP libraries. The code is built around a listener section that talks to Twilio, checks for images in incoming messages, saves them locally, resizes them, and posts them to Simperium. The tool also includes a demo app on GitHub that can be viewed in its entirety. The live blogging tool is simple but provides a good starting point for building more complex applications.