The Communities Collaboration Solution is a tab on the Communities Sponsored Content you are participating in. Please note that not all Sponsored Content campaigns have Communities.
On the Co-Promote page, you will be able to easily share and re-syndicate your fellow Community influencer's work. Read this blog post for step-by-step directions and more information.
You will see all of the blog posts from the rest of the community on this page. Below each of the blog posts, you will see five buttons. You can use these buttons to share that blog post on that corresponding social media channel, as well as confirm that you have left a comment on that blog.