Chatter tab is the place that collects all discussion in your Fingertip organization. Share the problem, communicate with others in one place. There is a dedicated Chatter for each Decision and Plan, but the Chatter tab collects all posts together in a feed.
Use Posts, Polls and Questions to publish your ideas and opinions to the relevant stakeholders. You can also upload files, picture or links.
Watch a short introduction video of how to use Chatter in the video below: