This Week in Social is a weekly digest of some of the biggest stories in social media marketing news. These stories are the show notes for the Brave Ad World Podcast. Each story is discussed at a deeper level on the podcast.

This week’s headlines: Facebook Tests Mobile Graph Search, Twitter Gives User Data to Music Industry, Microsoft Invests in Foursquare, Twitter Reports First Post-IPO Earnings, Pinterest Updates Acceptable Use Policy, LinkedIn Reports Q4 2013 Earnings and Klout Redesigns to Help Users Improve Influence.

The week’s news quick hits: Twitter Unrolls Web Redesign to Users, Tumblr Enables SSL Encryption, Facebook Turns 10, Twitter Shows Tweet Engagement in Mobile Timelines, YouTube Plans to Audit Videos for Fraudulent Views and Twitter Launches Data Grants.