Nicolas

Never read the print version, the audio version is good: Lots of ideas and examples. At least some of these examples will be applicable or adaptable to some parents cases.
I don't know in real life if playful parenting can be applied all the time, especially when there are discipline issues, and / or when parents want the children to abide by some rules.
In all other circumstances, playful parenting is good, and at least it will give insights and ideas for parents for some good quality time with their children, and even to better understand their children through methods outlined in the audio book.

Lots of ideas, some applicable, some less applicable, some that couldn't work anymore today in the field of SEO, because this field changes a lot. But overall, even ideas that couldn't work or that aren't applicable can give the person listening to the book other ideas that could work for him or her, or could be twisted to work.
The good thing about this audio book is that you do not have to remain very concentrated on each section of the book, because each section is somehow independent from the others, and if the listener can take just one idea of the whole book and apply it successfully, it would be a great thing!