Pinterest is adding a way for users to collaborate on boards

Group boards will have their own designated feed, where users will be able to communicate with others collaborating on that board and also get updates on new member additions or added pins … It’s another step to get people onto Pinterest and sticking around as they look to plan events, and create more ways to make the platform more and more sticky … By making the platform more sticky, it can go back to those advertisers and offer them better engagement metrics and show that users stick around and are paying closer attention to content on Pinterest, which can in turn drive that additional value to advertisers.