I find the whole of concept of social media and how far we have come in so little time fascinating!
And this was an excellent book which covered the subject very well.
The various topics include blogging and podcasting, standards, enthusiasts, the power of influence, how big business is using it, viral marketing and next steps.
Even if you just have a personal blog, it is still an interesting read to discover how businesses are using social media to change the way they provide information to us and how we are willing to accept it.