Social media usage has surpassed email and people now spend over 200 million hours per month gaming online in the US. However, issues like spam, cheating, and threats to privacy and reputation exist on current social media platforms. The document proposes empowering Horizon 2020 by developing methods, platforms, tools, social incentives and business models to create trustable social media centered around assessing the trust and reputation of online content and people. This would help harness collective intelligence into apps that can support sustainability, the environment, social capital and economic growth.