Other+Popular+Modules

=**Main Features found in Social Networks and Modules for Implementation:**=

**1. Profile page**

 * Profile 2 Module
 * Content Profile Module

**2. Real time updates**

 * Activity Stream Module
 * Follow Module
 * Heartbeat Module

**3. Add friends/other users of site**

 * User Relationship Module
 * Request Invitation Module

**4. Leave comments**

 * Comment Module

**5. Private messaging**

 * Privatemsg Module

**6. Status**

 * Statuses (Social Microblog) Module

Overall, there are many modules available on Drupal to enable users to create their own social networking site, listed above are only a few (popular) examples of modules that offer the main features found in a typical social network.