This week’s headlines: Twitter Acquires BlueFin Labs, Facebook Launching Location-Sharing App, Facebook to Make Ads More Transparent for Users, Instagram Brings Content to the Web and LinkedIn Launching Sponsored Posts.

The week’s news quick hits cover: Pinterest Updates iOS App, Super Bowl Breaks Social Interactions Record, Zynga’s Future Still Holds [Some] Promise, Pinterest Eyes $2.5 Billion Valuation, Tumblr Rolls Out Real-Time Notifications, Twitter Streamlines Discover Tab on Mobile App, Google+ Updates Hangouts for Low-Bandwidth Users, Twitter Search Reveals Older Tweets and Facebook Deletes Facial Recognition Data in Europe.