I got a review copy of this from the author and I think it will be very useful to a lot of folks in a fairly narrowly defined audience.
If you blog a lot then you don't need this book. It should be clear from the title that this is for folks who are having a hard time coming up with things to blog about but hey, a review is longer than a title so I can make it more clear here.
This is for people who want to blog, like blogging, feel like it is a good way to connect with their audience, and frequently look at their screen in complete bewilderment at what to write that would interest anyone. In a nutshell, the advice is to write about your writing. Write about your characters, the decisions you made about them, the decisions you made about the decisions the characters made, the research that went into the book, how you got the idea for the book and so forth. A lot of time it seems that writers don't realize that being a writer makes you different than the vast majority of your readers. People want to know what it's like. Of course, she gets more specific and more specific is good.
The bottom line is that I don't think I am in the target market (I have a hard time believing people aren't interested in everything I have to say) and I got a little bit out of it so I think if you are in the target market, you'll get a lot of out it.