In a nutshell: Let others know what a book is all about. Be careful not to spoil it!
How to Earn it
Write a summary for any title you have read for Kids Book Club. Click on Add Details and then Summary on any title's page, or next to anything on your Shelf. The badge’s counter will go up as you comment on more titles.
If you are in the United States, you must be 13 or older to leave a comment. At some libraries, users under 13 can add free-text content with a parent’s permission.