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: Twitter Tests Local Feature Called Nearby, Facebook Launches ‘Donate’ Button and Facebook Launches Video Ads.

The week’s news quick hits: Yammer Adds Tool for Non-Users, Promoted Accounts Go Mobile, Facebook Acquires Sports Stream, YouTube Unveils Roku App, Vine Offers Vanity URLs, Facebook Updates Page Insights with Real-Time Data and Foursquare Gets Another Round of Funding.