Social media dominated all aspects of the news this week as a little start-up by the name of Facebook made it's stock market debut. Twitter also made news with an email digest. There's a lot to cover, and we hit what you need to know on the latest episode of Brave Ad World.

This week’s headlines: Twitter Launches Email Digest, The Auto Industry Raises Questions around Facebook Ads, and Facebook’s IPOs and Makes Another Acquisition.

The week’s news quick hits cover: Facebook’s Mobile News Feed Gets More Timeline Updates, Apple Working on Photo-Sharing iCloud Feature, Google Makes Significant Changes by Bringing the Knowledge Graph to Search, Facebook Tests Promoted User Posts and Twitter Joins ‘Do Not Track.’

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