The app Groups was built to filter out the main feed to show users only the content that they are interested in. The app filters content by allowing users to join groups. Once a user joins a group the user will see posts relating to the topic. The user can make posts to the group while have the option to share their login id or be anonymous. The user can make comments on a post using a alias they define after they log in. Other options include creating groups, receiving alerts, and saving posts.