Social Pro Daily Picture This: Facebook Upgrades Photo Viewer Facebook introduced two more upgrades to its photo viewer. By David Cohen March 22, 2012 Facebook introduced two more upgrades to its photo viewer. David Cohen david.cohen@adweek.com David Cohen is editor of Adweek's Social Pro Daily. Recommended articles {"title":"Recommended","post_types":["post","page"],"channel":"parsely","lineup_id":"54851","since_qty":226,"since_time":"d","until_qty":1,"until_time":"m","q":"","num_posts":0,"vertical":"performance-marketing"}