An emerging group of leaders in Canadian education has attracted thousands of followers. They've made Twitter an extension of their lives, delivering twenty or more tweets a day that can include, for example, links to media articles, research, new ideas from education bloggers, or to their own, or simply a personal thought. At their best, edu-tweeters are adeptly leveraging Twitter to brand themselves, to reinvent teacher PD, and perhaps to accelerate the transformation of our Canadian education systems. Twitter is being used to extend formal PD conferences beyond their venue to followers on Twitter in real time; it's facilitating informal discussions ("unconferences") among educators with common interests; it's allowing best practices to "go viral" on the Internet; and it's allowing innovative classroom teachers to challenge the status quo. (Contains 1 table and 12 endnotes.)