The Facebook integration on your Nintendo DSi camera application was a photo functioning social networking website that allowed users to share their photos with other people. You will need a wireless internet connection if you want to access it. It will upload the photo after asking you for your Facebook email and password (it saves the email and asks you the password every session). You can then go to Facebook and setup what to do with the picture(s). All DS versions have WiFi so you can have other people connect to you by having a Nintendo DSi system and can send them pictures. The Facebook integration was discontinued on January 29th, 2014.