The document outlines 5 essential roles for online community leaders: Gatekeeper, Welcomer, Value Deliverer, Peacekeeper, and Advocate. It describes the responsibilities of each role, such as establishing boundaries for Gatekeepers, welcoming and guiding new members for Welcomers, and delivering values like learning, social connection, and fun for Value Deliverers. It also provides tips for Peacekeepers on enforcing guidelines respectfully and for Advocates on listening to members and assessing their own strengths and weaknesses.