19 of 19 people found the following review helpful
Its just an extract from the original,
This review is from: Marketing in the Groundswell (Hardcover)
It's not clear from the official review on this site but this is just an extract from the original book - so if you've got that already then don't bother to buy this.
The original is brilliant but if you've got it then you don't need this and if you haven't got it then buy that rather than this and get the whole story.