This document discusses using Twitter for teaching. It provides an overview of Twitter, noting it has over 200 million users who post 400 million tweets per day. It recommends using a Twitter client instead of trying to read all tweets. Potential ways to use Twitter for teaching include for conversations, publicity, sharing news and resources, networking, and following experts. Research suggests Twitter can increase student engagement. Possible Twitter assignments are also outlined, along with some issues and concerns to consider like privacy and data mining.