You really need to listen to kids - they have the most honest and heartfelt opinions. The other day a 9 year old girl, who has 5 year old twin siblings at home, told me that What do you do when a monster says Boo was the "greatest book ever." She said that younger brothers and sisters can really be annoying and when they are acting up, and that this book gives good ideas on things you can do with them instead of hitting them. Yeah, I thought a book that suggested other things besides hitting couldn't be all bad, so I gave it a read, and am now taking it home for my daughter to read and with her little brother!