New Salesforce report finds Big 3 social networks boosted ad revenue almost 50 percent in past year

Facebook, Twitter, and LinkedIn together saw a 49 percent increase in ad revenue in the past year.

http://venturebeat.com/2015/07/08/new-salesforce-report-finds-big-3-social-networks-boosted-ad-revenue-almost-50-percent-in-last-year/