Theme is a collection of personal ZIMES created using the same tag (Theme ID). Start a new Theme or join an existing Theme important to you. Enter the data just like when creating a personal ZIME, supply the Theme ID, and then press 'BUTTON_GENERATE'. Add the most beautiful ZIMES to your Josta by pressing ICON_ALBUM_ZIME_ADD. For that you have to be signed in first. Press ICON_ALBUM_ZIME_SEND to send a message to your friends, so that they can add the new ZIME to their Jostas, and join the discussion about the Theme, too.