Please note: This site will be retired as of November 1, 2016.
The Atlas application was last updated in 2013. Consider using one of the many Story Maps from Esri instead, as they allow an Atlas-like experience, where you are merely providing access to a group of maps, as well as a more narrated experience of those same maps, where you can ensure the person viewing the maps sees some areas of particular interest. Click here to view the many Esri Story Map options.
If you have created already created an Atlas, it will continue to work. This site and its resources will no longer be available as of November 1.