On All About Ads, watch Facebook's COO, Sheryl Sandberg talking about the social media, company's plans for India in an exclusive interview. She expresses regret over Facebook's communication on it's 2012 mood manipulation study. Also on this week's show, with the onset of the online platform, long duration ads are catching up fast. Find out whether these ads are here to stay. And check out some of the Grand Prix award winners from Cannes Lions 2014.