This document outlines Expo 2015's social media strategy and engagement plan with participant countries. It discusses using social platforms like Facebook, Twitter and Instagram to share content from 140 participant countries, 30 partners and other stakeholders. It also details initiatives like Follow Friday, ExpoTube videos, a Social Media Hub dashboard and National Day coverage to promote individual countries. The goal is to spread brand awareness and support projects through both top-down Expo content and bottom-up user generated content.