This document provides guidance on live-tweeting events. It defines live-tweeting as using Twitter to report on developing stories in real-time. It then offers best practices for both event organizers and participants to follow when live-tweeting an event. For organizers, it recommends choosing a clear hashtag, publicizing it, checking WiFi, reading and engaging with tweets, and collecting them after. For participants, it suggests using the hashtag, tagging speakers, engaging with other tweets, linking to related content, and remembering tweets are public.