Welcome to Meta-Wiki, the global community site for the Wikimedia projects and the Wikimedia movement in general. Meta-Wiki's discussions range from coordination and documentation to planning and analysis of future Wikimedia activities.
Other meta-focused wikis such as Wikimedia Outreach are specialized projects that have their roots in Meta-Wiki. Related discussion also takes place on Wikimedia mailing lists (particularly wikimedia-l, with its low-traffic equivalent WikimediaAnnounce), IRC channels on Freenode, individual wikis of local Wikimedia chapters, and other places.