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: Yahoo Acquires Tumblr, Pinterest Launches Rich Pins, Flickr Gets an Overhaul, Twitter Launches Lead Generation Cards, Twitter TV Advertising is Here and Foursquare Sells Real-Time Check-In Data.

The week’s news quick hits: Facebook Offers Comes to Android, Pinterest “Pin It” Button Integrated into Apps, Microsoft Introduces Xbox One, Twitter Launches Two-Factor Authentication and Foursquare Refines Search Capabilities.