The Backflip organizes photos using tags. You can apply up to five tags to each photo.
When viewing the picture gallery there is a tab at the top of the screen. Tap this tab to drop down a ribbon that has all of your tags on it. Built in tags include My Pictures and All Pictures.
My pictures includes the pictures you have taken with the camera.
To tag a photo long press on the icon representation or the menu button when viewing the picture and select tag. You will be shown a list of existing tags. You can attach one of these tags to the picture by tapping the check box next to the tag and then tapping OK . To add a new tag tap Menu again and then New tag.
If you are viewing a group of pictures based on a tag and enter slideshow mode only the pictures with that tag are shown.