Module Link: http://drupal.org/project/heartbeat

The Heartbeat module allows you broadcast actions that you've done on the site.

• Who: Technical users
• When: Use this module when you want to let your users see what other users are doing like saving nodes, adding friends, commenting, etc.
• Where: You can configure this module by going to admin/build/heartbeat but don't forget it adds options to the user profile and you're going to have to work with views to display people's activities
• Why: Personally, I blame Facebook for this one. Now all social websites have to broadcast every single movement you make.

Theme song "i dunno" by grapes.