Delta has updated their iPhone application so that you can keep track of your bags. After you check your bags in, you just have to take a picture of your baggage tag. As you are traveling, you can check in to see where your bags have been delivered and received plane-side scans. Through the app, you can also pay for bags when you check in to your flight. Check out the video demo above.

Google Inc. (NASDAQ:GOOG) knows that it is better to give than to receive during the holiday season. That is why they are giving away free Gogo Inflight Wi-Fi on every domestic flight from November 20, 2010 to January 2, 2011 on AirTran, Delta, and Virgin America. You can find out more about the partnership between Google and the plane companies at freeholidaywifi.com. [Google Blog]