Invite Drupal Module encourages the current users to invite their colleges, friends and family members to join your group on social media site. This module work with the User Relationship module.
User Points Module
User Points Module allows users to accumulate points for actions like posting nodes, moderating, sharing a picture, commenting and more. The Drupal site administrator can use these points to upgrade or exchange roles for goods or incentives on your website.
Flag Module works with the Flag Friend submodule. Using the Flag API, Flag friend provides a single or two-way relation type that can share messages and notification to the recipient of the friend request providing information on accepting the request.
This module can be used to display the user activities on the website. Like the Activity Drupal Module, Heartbeat is an … Read the rest