Target ages describes which age group is appropriate for your ezine. The possible choices are "All ages" - your ezine is of potential interest to everyone; "Adults only" - your ezine is not suitable for children; and "For children" - your ezine is designed to be read by children. The target ages field is optional - if it's not given, it will default to "All ages".

If your ezine discusses adult topics, such as sexuality and drug culture, it should be listed under "Adults only". It should probably be listed as "All ages" for topics that would bore children to tears, but aren't specifically considered "Adult" topics.