Drupal plugin integrates Google Friend Connect and the native Drupal authentication mechanisms. Lets any site visitor access the different secured sections of the site just like a native registered user, by using the single-click Friend Connect button.
You may not have realized the benefits of being able to use tweets to find out where your Amazon delivery is, but TrackThis wants to change that. It's an app that combines more than six different APIs in order to let you track your packages over email, text message, Facebook or Twitter. It monitors your packages and when they move it sends you a message with the new location and ETA. TrackThis supports FedEx, UPS, USPS, DHL and other tracking codes.