Dive Brief:

• Pinterest has announced updates to its privacy policy that will go into affect on October 19. 
• The new policy is meant to help reflect changes to Promoted Pins —Pinterest's ad product —that will now have more audience tracking and targeting capabilities. 
• The policy outlines that Pinterest will now be gathering log data, cookie data, and device information to help serve relevant adds to the right users. 

Dive Insight: 

Pinterest is going about it a different way, but ultimately the social site is building an ad network just like rivals Facebook and Twitter. Although the specific steps weren't outlined in the announcement, users will have the ability to opt out of some of the data collection. That could skew things for advertisers a bit, but ultimately ads will be delivered to a more receptive audience if some have the option to opt out.