This document discusses Google's upcoming mobile-friendly algorithm update called "Mobilegeddonpocalypse" set to take effect on April 21, 2015. It provides background on the speaker and explains that the update will prioritize mobile-friendly websites in mobile search results. Key things site owners should do are to check if their site has been flagged by Google as unfriendly in Webmaster Tools, fix any issues, test pages for mobile-friendliness, ensure CSS and JavaScript aren't blocked from robots.txt files, and properly redirect mobile user agents for separate mobile sites. The presentation aims to help attendees understand the update and take appropriate action to ensure their sites remain visible in mobile search results.