In 2016, social ad revenue in Europe exceeded the combined ad revenue of RTL Group and Mediaset Group. Marketers and media executives need to understand the dynamics driving social's rise to ensure their strategies align with the changing landscape. This forecast can help. It includes data on social ad spending across Europe, with country-specific data for 17 countries and additional per-user and device-type detail for France, Germany, Italy, Netherlands, Spain, Sweden, and the UK. For context, we also provide historical data for key social media companies.