SocialTimes.Me
Facebook Pages Statistics - Socialbakers
Instagram’s User Count Now At 40 Million, Saw 10 Million New Users In Last 10 Days | TechCrunch
Facebook Marketing Statistics, Demographics, Reports, and News – CheckFacebook
PageData - Facebook Page Metrics from Inside Facebook
All Facebook - The Unofficial Facebook Blog - Facebook News and More!
Facebook: Facts, Figures & Statistics For 2010 | Digital Buzz Blog
dA | social media ratings and report services