1. Facebook started letting advertisers test video ads that play automatically in late 2013.

2. As advertisers and readers turned their backs, it closed in July 2011.

3. Wojcicki said the number of advertisers running video ads has increased 40%.

4. Those are metrics advertisers want to know and use to sell you stuff.

5. The benefit for advertisers is that users are likely to pay more attention to the ad.

6. Those advertisers know you were here and you went home.

7. YouTube has said it was giving more control to advertisers about where their ads would appear.

8. Google currently offers advertisers and ad agencies tools to control where their ads appear.

9. In order to attract more advertisers, Twitter needs to show better user and engagement growth.

10. It goes on to state, We do not give your content or information to advertisers without your consent.

11. The company needs to attract big audiences that advertisers know they can reach.

12. The tool will give advertisers a better idea of how successful their online ad campaigns are.

13. There are competing interests here, not the least of which are advertisers that rely on tracking.

14. Yet there is no question that advertisers are wondering about the future.

15. That puts Facebook on two screens for the user, a strategy advertisers certainly will favor.